In the Roaring Twenties and into the 1930s, Hearst Castle reached its social peak. Originally intended to be a family home for Hearst, his wife Millicent and their five sons, by 1925 Hearst's marriage was effectively over and San Simeon became his domain and that of his mistress, the actress Marion Davies. Their guest list included many of the Hollywood stars of the period; Charlie Chaplin, Cary Grant, the Marx Brothers, Greta Garbo, Buster Keaton, Mary Pickford, Jean Harlow and Clark Gable all visited, some on multiple occasions. Political luminaries encompassed Calvin Coolidge and Winston Churchill while other notables included Charles Lindbergh, P. G. Wodehouse and Bernard Shaw. Visitors gathered each evening at Casa Grande for drinks in the assembly room, dined in the refectory and watched the latest movie in the theater before retiring to the luxurious accommodation provided by the guest houses of Casa del Mar, Casa del Monte and Casa del Sol. During the days, they admired the views, rode, played tennis, bowled or golfed and swam in the "most sumptuous swimming pool on earth". While Hearst entertained, Morgan built; the castle was under almost continual construction from 1920 until 1939, with work resuming after the end of World War II until Hearst's final departure in 1947.

Hearst, his castle and his lifestyle were satirized by Orson Welles in his 1941 film Citizen Kane. In the film, which Hearst sought to suppress, Charles Foster Kane's palace Xanadu is said to contain "paintings, pictures, statues, the very stones of many another palace – a collection of everything so big it can never be cataloged or appraised; enough for ten museums; the loot of the world". Welles's allusion referred to Hearst's mania for collecting; the dealer Joseph Duveen called him the "Great Accumulator". With a passion for acquisition almost from childhood, he bought architectural elements, art, antiques, statuary, silverware and textiles on an epic scale. Shortly after starting San Simeon, he began to conceive of making the castle "a museum of the best things that I can secure". Foremost among his purchases were architectural elements from Western Europe, particularly Spain; over thirty ceilings, doorcases, fireplaces and mantels, entire monasteries, paneling and a medieval tithe barn were purchased, shipped to Hearst's Brooklyn warehouses and transported on to California. Much was then incorporated into the fabric of Hearst Castle. In addition, he built up collections of more conventional art and antiques of high quality; his assemblage of ancient Greek vases was one of the world's largest.

In May 1947, Hearst's health compelled him and Marion Davies to leave the castle for the last time. He died in Los Angeles in 1951. Morgan died in 1957. The following year, the Hearst family gave the castle and many of its contents to the State of California and the mansion was opened to the public in June 1958. It has since operated as the Hearst San Simeon State Historical Monument and attracts about 750,000 visitors annually. The Hearst family retains ownership of the majority of the wider estate of 82,000 acres and, under a land conservation agreement reached in 2005, has worked with the California State Parks Department and American Land Conservancy to preserve the undeveloped character of the area; the setting for the castle which Bernard Shaw is said to have described as "what God would have built if he had had the money".

At George Hearst's death in 1891, he left an estate of $18 million to his widow including the California ranch. Phoebe Hearst shared the cultural and artistic interests of her son, collecting art and patronizing architects. She was also a considerable philanthropist, founding schools and libraries, supporting the fledgling University of California, Berkeley, including the funding of the Hearst Mining Building in memory of her husband, and making major donations to a range of women's organizations, including the YWCA. During this period, probably in the late 1890s, Mrs Hearst encountered Julia Morgan, a young architecture student at Berkeley. On Phoebe Hearst's own death in 1919, Hearst inherited the ranch, which had grown to 250,000 acres and 14 mi of coastline, as well as $11 million. Within days, he was at Morgan's San Francisco office.

Morgan and Hearst: "a true collaboration"

Julia Morgan, born in 1872, was forty-seven when Hearst entered her office in 1919. Her biographer Mark A. Wilson has described her subsequent career as that of "America's first independent full-time woman architect". After studying at Berkeley, where she worked with Bernard Maybeck, in 1898 she became the first woman to win entry to the prestigious École des Beaux-Arts in Paris. Passing out from the École in 1902, Morgan returned to San Francisco and took up a post at the architectural practice of John Galen Howard. Howard recognized Morgan's talents, but also exploited them – "... the best thing about this person is, I pay her almost nothing, as it is a woman" – and in 1904, she passed the California architects' licensing examination, the first woman to do so, establishing her own office at 456 Montgomery Street in 1906. During her time with Howard, Morgan was commissioned by Phoebe Hearst to undertake work at her Hacienda del Pozo de Verona estate at Pleasanton. This led to work at Wyntoon and to a number of commissions from Hearst himself; an unexecuted design for a mansion at Sausalito, north of San Francisco, a cottage at the Grand Canyon, and the Los Angeles Examiner Building.

In 1919, when he turned up at Morgan's office, Hearst was fifty-six years old and the owner of a publishing empire that included twenty-eight newspapers, thirteen magazines, eight radio stations, four film studios, extensive real-estate holdings and thirty-one thousand employees. He was also a significant public figure: although his political endeavors had proved largely unsuccessful, the influence he exerted through his very direct control of his media empire attracted fame and opprobrium in equal measure. In 1917, one biographer described him as "the most hated man in the country". The actor Ralph Bellamy, a guest at San Simeon in the mid-1930s, recorded Hearst's working methods in a description of a party in the assembly room: "the party was quite gay. And in the midst of it, Mr Hearst came in. There was a (teletype machine) just inside and he stopped and he read it. He went to a table and picked up a phone. He asked for the editor of (his) San Francisco newspaper and he said, 'Put this in a two-column box of the front pages of all the newspapers tomorrow morning.' And without notes he dictated an editorial".

Morgan and Hearst's partnership at San Simeon lasted from 1919, until his final departure from the castle in 1947. Their correspondence, preserved in the Julia Morgan archive in the Robert E. Kennedy Library at Cal Poly San Luis Obispo, runs to some 3,700 letters and telegrams. Victoria Kastner, Hearst Castle's in-house custodian, has described the partnership as "a rare, true collaboration" and there are many contemporary accounts of the closeness of the relationship. Walter Steilberg, a draughtsman in Morgan's office, once observed them at dinner; "The rest of us could have been a hundred miles away; they didn't pay any attention to anybody ... these two very different people just clicked". Thomas Aidala, in his 1984 history of the castle, made a similar observation: "seated opposite each other, they would discuss and review work, consider design changes, pass drawings back and forth ... seemingly oblivious of the rest of the guests.

Having a ball: 1925–1938

Hearst and his family occupied Casa Grande for the first time at Christmas, 1925. Thereafter, Hearst's wife, Millicent, went back to New York, and from 1926 until they left for the last time in 1947, Hearst's mistress Marion Davies acted as his chatelaine at the castle. The Hollywood and political elite often visited in the 1920s and 1930s. Among Hearst's guests were Calvin Coolidge, Winston Churchill, Charlie Chaplin, Cary Grant, the Marx Brothers, Charles Lindbergh, Jean Harlow and Clark Gable. Churchill described his host, and Millicent Hearst and Davies, in a letter to his own wife; "a grave simple child – with no doubt a nasty temper – playing with the most costly toys ... two magnificent establishments, two charming wives, complete indifference to public opinion, oriental hospitalities". In another letter to Clementine, Churchill dismissed criticism of San Simeon; “his house is rudely described as Monte Carlo Casino on top of the Rock of Gibraltar - but it is better than this.” Weekend guests were either brought by private train from Glendale Station north of Los Angeles, and then by car to the castle, or flew into Hearst's airstrip, generally arriving late on Friday evening or on Saturday. Cecil Beaton wrote of his impressions during his first visit for New Year's Eve in 1931: "we caught sight of a vast, sparkling white castle in Spain. It was out of a fairy story. The sun poured down with theatrical brilliance on tons of white marble and white stone. There seemed to be a thousand statues, pedestals, urns. The flowers were unreal in their ordered profusion. Hearst stood smiling at the top of one of the many flights of garden steps".

Guests were generally left to their own devices during the day. Horse-riding, shooting, swimming, golf, croquet and tennis were all available, while Hearst would lead mounted parties for picnics on the estate. The only absolute deadline was for cocktails in the assembly room at 7.30 on Saturday night. Alcohol was rationed; guests were not permitted to have liquor in their rooms, and were limited to one cocktail each before dinner. This was due not to meanness on Hearst's part but to his concerns over Davies's alcoholism, though the rule was frequently flouted. The actor David Niven later reflected on his supplying illicit alcohol to Davies; "It seemed fun at the time to stoke up her fire of outrageous fun and I got a kick out of feeling I had outwitted one of the most powerful and best informed men on earth, but what a disloyal and crummy betrayal of (him) and what a nasty potential nail to put in her coffin". Dinner was served at 9.00 in the refectory. Wine came from Hearst's 7,000-bottle cellar. Charlie Chaplin commented on the fare; "dinners were elaborate, pheasant, wild duck, partridge and venison" but also the informality, "amidst the opulence, we were served paper napkins, it was only when Mrs Hearst was in residence that the guests were given linen ones". The informality extended to the ketchup bottles and condiments in jars which were remarked on by many guests. Dinner was invariably followed by a movie; initially outside, and then in the theater. The actress Ilka Chase recorded a showing in the early 1930s; "the theater was not yet complete – the plaster was still wet – so an immense pile of fur coats was heaped at the door and each guest picked one up and enveloped himself before entering...Hearst and Marion, close together in the gloom and bundled in their fur coats, looked for all the world like the big and baby bears". Movies were generally films from Hearst's own studio, Cosmopolitan Productions, and often featured Marion Davies. Sherman Eubanks, whose father worked as an electrician at the castle, recorded in an oral history: "Mr Hearst would push a button and call up to the projectionist and say 'Put on Marion's Peg o' My Heart'. So I've seen Peg o' My Heart about fifty times. This is not being critical. I'm simply saying that's the way it was". Chase noted that this repetition tended to "put a slight strain on the guests' gratitude".

In 1937, Patricia Van Cleeve married at the castle, the grandest social occasion there since the visit of President and Mrs Coolidge in February 1930. Ken Murray records these two events as the only occasions when formal attire was required of guests to the castle. Van Cleeve, who married the actor, Arthur Lake, was always introduced as Marion Davies' favorite niece. It was frequently rumored that she was in fact Davies and Hearst's daughter, something she herself acknowledged just before her death in 1993. In February 1938, a plane crash at the San Simeon airstrip led to the deaths of Lord and Lady Plunket, who were traveling to the castle as Hearst's guests, and the pilot Tex Phillips. The only other passenger, the bobsledding champion, James Lawrence, survived.

Depression, death and after: 1939–present

By the late 1930s the Great Depression and Hearst's profligacy had brought him to the brink of financial ruin. Debts totaled $126 million. He was compelled to cede financial control of the Hearst Corporation, newspapers and radio stations were sold, and much of his art collection was dispersed in a series of sales, often for considerably less than he had paid. Hearst railed against his losses, and the perceived incompetence of the sales agents, Parish-Watson & Co.: "they greatly cheapened them and us, (he) advertises like a bargain basement sale. I am heartbroken". Construction at Hearst Castle virtually ceased. After Pearl Harbor the castle was closed up and Hearst and Davies moved to Wyntoon which was perceived to be less vulnerable to enemy attack. They returned in 1945 and construction on a limited scale recommenced, finally ending in 1947. In early May of that year, with his health declining, Hearst and Davies left the castle for the last time. The pair settled in at 1007 North Beverly Drive in Beverly Hills. Hearst died in 1951, his death abruptly severing him from Davies, who was excluded from the funeral by Hearst's family – "For thirty-two years I had him, and they leave me with his empty room". In 1950 Julia Morgan closed her San Francisco office after a career of forty-two years. Ill health circumscribed her retirement and she died, a virtual recluse, in early 1957.

In 1958 the Hearst Corporation donated Hearst Castle, its gardens, and many of its contents, to the state of California. A dedicatory plaque at the castle reads: "La Cuesta Encantada presented to the State of California in 1958 by the Hearst Corporation in memory of William Randolph Hearst who created this Enchanted Hill, and of his mother, Phoebe Apperson Hearst, who inspired it". The castle was opened to the public for the first time in June 1958. Hearst Castle was added to the National Register of Historic Places on June 22, 1972, and became a United States National Historic Landmark on May 11, 1976. Hearst was always keen to protect the mystique of his castle. In 1926, he wrote to Morgan to congratulate her after a successful party was held on the hill: "those wild movie people said it was wonderful and that the most extravagant dream of a movie picture fell far short of this reality. They all wanted to make a picture there but they are NOT going to be allowed to do this...". Commercial filming at the castle is still rarely allowed; since 1957 only two projects have been granted permission. Stanley Kubrick's 1960 film Spartacus used the castle to stand in as Crassus' villa, and in 2014, Lady Gaga's music video for "G.U.Y." was filmed at the Neptune and Roman Pools.

Architecture

Design

Hearst first approached Morgan with ideas for a new project in April 1919, shortly after the death of his mother had brought him into his inheritance. His original idea was to build a bungalow, according to Walter Steilberg, one of Morgan's draftsmen who recalled Hearst's words from the initial meeting: "I would like to build something up on the hill at San Simeon. I get tired of going up there and camping in tents. I'm getting a little too old for that. I'd like to get something that would be a little more comfortable".

Within a month, Hearst's original ideas for a modest dwelling had greatly expanded. Discussion on the style began with consideration of "Jappo-Swisso" themes. Then the Spanish Colonial Revival style was favored. Morgan had used this style when she worked on Hearst's Los Angeles Herald Examiner headquarters in 1915. Hearst appreciated the Spanish Revival but was dissatisfied with the crudeness of the colonial structures in California. Mexican colonial architecture had more sophistication, but he objected to its abundance of ornamentation. Thomas Aidala, in his 1984 study of the castle, notes the Churrigueresque influence on the design of the main block, "flat and unembellished exterior surfaces; decorative urges are particularized and isolated, focused mainly on doorways, windows and towers". The 1915 Panama–California Exposition in San Diego held the closest approximations in California to the approach Hearst desired. But his European tours, and specifically the inspiration of the Iberian Peninsula, led him to Renaissance and Baroque examples in southern Spain that more exactly suited his tastes. He particularly admired a church in Ronda, Spain and asked Morgan to model the Casa Grande towers after it. In a letter to Morgan dated December 31, 1919, Hearst wrote, "The San Diego Exposition is the best source of Spanish in California. The alternative is to build in the Renaissance style of southern Spain. We picked out the towers of the church at Ronda... a Renaissance decoration, particularly that of the very southern part of Spain, could harmonize well with them. I would very much like to have your views on... what style of architecture we should select." This blend of Southern Spanish Renaissance, Revival and Mediterranean examples became San Simeon's defining style; "something a little different than other people are doing out in California". The architectural writers Arrol Gellner and Douglas Keister describe Casa Grande as "a palatial fusion of Classicism and Mediterranean architecture... [that] transcended the Mission Revival era and instead belonged to the more archaeological Period Revival styles that gained favor after the Panama–California Exposition of 1915".

Hearst Castle has a total of 42 bedrooms, 61 bathrooms, 19 sitting rooms, 127 acres of gardens, indoor and outdoor swimming pools, tennis courts, a movie theater, an airfield and, during Hearst's lifetime, the world's largest private zoo. Hearst was an inveterate rethinker who would frequently order the redesign of previously agreed, and often built, structures: the Neptune Pool was rebuilt three times before he was satisfied. He was aware of his propensity for changing his mind; in a letter dated 18 March 1920, he wrote to Morgan; "All little houses stunning. Please complete before I can think up any more changes". As a consequence of Hearst's persistent design changes, and financial difficulties in the early and later 1930s, the complex was never finished. By late summer 1919, Morgan had surveyed the site, analyzed its geology, and drawn initial plans for Casa Grande. Construction began in 1919 and continued through 1947 when Hearst left the estate for the last time. During the early years of construction, until Hearst's stays at San Simeon became longer and more frequent, his approval for the ongoing design was obtained by Morgan sending him models of planned developments. By the late 1920s the main model, designed by another female architect Julian C. Mesic, had become too large to ship and Mesic and Morgan would photograph it, hand color the images, and send these to Hearst.

Construction

The castle's location presented major challenges for construction. It was remote; when Morgan began coming to the estate for site visits in 1919, she would leave her San Francisco office on Friday afternoon and take an eight-hour, 200-mile train journey to San Luis Obispo, followed by a fifty-mile drive to San Simeon. The relative isolation made recruiting and retaining a workforce a constant difficulty. In the early years, the estate lacked water, its limited supplies coming from three natural springs on Pine Mountain, a 3,500 ft-high peak seven miles east of Hearst Castle. The issue was addressed by the construction of three reservoirs and Morgan devised a gravity-based water delivery system that transported water from the nearby mountain springs to the reservoirs, including the main one on Rocky Butte, a 2,000 ft knoll less than a mile southeast from Hearst Castle. Water was of particular importance; as well as feeding the pools and fountains Hearst desired, it provided electricity, by way of a private hydroelectric plant, until the San Joaquin Light and Power Corporation began service to the castle in 1924. The climate presented a further challenge. The proximity to the coast brought strong winds in from the Pacific Ocean and the site's elevation meant that winter storms were frequent and severe.

Water was also essential for the production of concrete, the main structural component of the houses and their ancillary buildings. Morgan had substantial experience of building in steel-reinforced concrete and, together with the firm of consulting engineers Earl and Wright, experimented in finding suitable stone, eventually settling on that quarried from the mountain top on which the foundation platform for the castle was built. Combining this with desalinated sand from San Simeon Bay produced concrete of exceptionally high quality. Later, white sand was brought in from Carmel. Material for construction was transported either by train and truck, or by sea into a wharf built in San Simeon Bay below the site. In time, a light railway was constructed from the wharf to the castle, and Morgan built a compound of warehouses for storage and accommodation for workers by the bay. Brick and tile works were also developed on site as brick was used extensively and tiling was an important element of the decoration of the castle. Morgan used several tile companies to produce her designs including Grueby Faience, Batchelder, California Faience and Solon & Schemmel. Albert Solon and Frank Schemmel came to Hearst Castle to undertake tiling work and Solon's brother, Camille, was responsible for the design of the mosaics of blue-and-gold Venetian glass tile used in the Roman pool and the murals in Hearst's Gothic library. Morgan worked with a series of construction managers; Henry Washburn from 1919 to 1922, then Camille Rossi from 1922, until his firing by Hearst in 1932, and finally George Loorz until 1940. From 1920 to 1939, there were between 25 and 150 workmen employed in construction at the castle.

Costs

The exact cost of the entire San Simeon complex is unknown. Kastner makes an estimate of expenditure on construction and furnishing the complex between 1919 and 1947 as "under $10,000,000". Thomas Aidala suggests a slightly more precise figure for the overall cost at between $7.2 and $8.2 million. Hearst's relaxed approach to using the funds of his companies, and sometimes the companies themselves, to make personal purchases made clear accounting for expenditure almost impossible. In 1927 one of his lawyers wrote, "the entire history of your corporation shows an informal method of withdrawal of funds". In 1945, when the Hearst Corporation was closing the Hearst Castle account for the final time, Morgan gave a breakdown of construction costs, which did not include expenditure on antiques and furnishings. Casa Grande's build cost is given as $2,987,000 and that for the guest houses, $500,000. Other works, including nearly half a million dollars on the Neptune pool, brought the total to $4,717,000. Morgan's fees for twenty-odd years of almost continuous work, came to $70,755. Her initial fee was a 6% commission on total costs. This was later increased to 8.5%. Many additional expenses, and challenges in getting prompt payment, led her to receive rather less than this. Kastner suggests that Morgan made an overall profit of $100,000 on the entire, twenty-year, project. Her modest remuneration was unimportant to her. At the height of Hearst's financial travails in the late 1930s, when his debts stood at over $87 million, Morgan wrote to him, "I wish you would use me in any way that relieves your mind as to the care of your belongings. There never has been nor will there be, any charge in this connection, [it is] an honor and a pleasure".

Casa del Mar

Casa del Mar, the largest of the three guest houses, provided accommodation for Hearst himself until Casa Grande was ready in 1925. He stayed in the house again in 1947, during his last visit to the ranch. Casa del Mar contains 5,350 square feet of floor space. Although luxuriously designed and furnished, none of the guest houses had kitchen facilities, an omission that sometimes irritated Hearst's guests. Adela Rogers St. Johns recounted her first visit: "I rang and asked the maid for coffee. With a smile, she said I would have to go up to the castle for that. I asked Marion Davies about this. She said W. R. (Hearst) did not approve of breakfast in bed." Adjacent  to Casa del Mar is the wellhead from Phoebe Hearst's Hacienda del Pozo de Verona, which Hearst moved to San Simeon when he sold his mother's estate after her death in 1919.

Casa del Monte

Casa del Monte was the first of the guest houses, originally entitled simply Houses A, B, and C, built by Morgan on the slopes below the site of Casa Grande during 1920–1924. Hearst had initially wanted to begin work with the construction of the main house but Morgan persuaded him to begin with the guest cottages because the smaller structures could be completed more quickly. Each guest house faces the Esplanade and appears as a single story at its front entrance. Additional stories descend rearward down the terraced mountain side. Casa del Monte has 2,550 sq ft (237 m2) of living space.

Casa del Sol

The decorative style of the Casa del Sol is Moorish, accentuated by the use of antique Persian tiles. A bronze copy of Donatello's David stands atop a copy of an original Spanish fountain. The inspiration for the fountain came from an illustration in a book, The Minor Ecclesiastical, Domestic and Garden Architecture of Southern Spain, written by Austin Whittlesey and published in 1919. Hearst sent a copy to Morgan, while retaining another for himself, and it proved a fertile source of ideas. The size of the house is 3,620 square feet (242 m2). Morgan's staff were responsible for the cataloguing of those parts of Hearst's art collection which were shipped to California and an oral record made in the 1980s indicates the methodology used for furnishing the buildings at San Simeon. "We would set (the object) up and then I would stand with a yardstick to give it scale. Sam Crow would take a picture. Then we would give it a number and I would write a description. These were made into albums. When Mr Hearst would write and say 'I want a Florentine mantel in Cottage C in Room B, and four yards of tiles', then we would look it up in the books and find something that would fit."

Casa Grande

Construction of Casa Grande began in April 1922. Work continued almost until Hearst's final departure on May 2, 1947, and even then the house was unfinished. The size of Casa Grande is 68,500 square feet (5,634 m2). The main western facade is four stories, the entrance front, inspired by a gateway in Seville, is flanked by twin bell towers modeled on the tower of the church of Santa Maria la Mayor. The layout of the main house was originally to a T-plan, with the assembly room to the front, and the refectory at a right angle to its center. The subsequent extensions of the North and South wings modified the original design. As elsewhere, the core construction material is concrete, though the façade is faced in stone. In October 1927 Morgan wrote to Arthur Byne; "We finally took the bull by the horns and are facing the entire main building with a Manti stone from Utah." Morgan assured Hearst that it would be "the making of the building." A cast-stone balcony fronts the second floor, and another in cast-iron the third. Above this is a large wooden overhang or gable. This was constructed in Siamese teak, originally intended to outfit a ship, which Morgan located in San Francisco. The carving was undertaken by her senior carver Jules Suppo. Sara Holmes Boutelle suggests Morgan may have been inspired by a somewhat similar example at the Mission San Xavier del Bac in Arizona. The façade terminates with the bell towers, comprising the Celestial suites, the carillon towers and two cupolas.

The curator Victoria Kastner notes a particular feature of Casa Grande, the absence of any grand staircases. Access to the upper floors is either by elevators or stairwells in the corner turrets of the building. Many of the stairwells are undecorated and the plain, poured concrete contrasts with the richness of the decoration elsewhere. The terrace in front of the entrance, named Central Plaza, has a quatrefoil pond at its center, with a statue of Galatea on a Dolphin. The statue was inherited, having been bought by Phoebe Hearst when her son was temporarily short of money. The doorway from the Central Plaza into Casa Grande illustrates Morgan and Hearst's relaxed approach to combining genuine antiques with modern reproductions to achieve the effects they both desired. A 16th-century iron gate from Spain is topped by a fanlight grille, constructed in a matching style in the 1920s by Ed Trinkeller, the castle's main ironmonger.

The castle made use of the latest technology. Casa Grande was wired with an early sound system, allowing guests to make music selections which were played from a Capehart phonograph located in the basement, and piped into rooms in the house through a system of speakers. Alternatively, six radio stations were available. The entire estate was also equipped with 80 telephones, operated through a PBX switchboard, which was staffed 24 hours a day, and ran under the exclusive exchange 'Hacienda'. Fortune recorded an example of Hearst's delighting in the ubiquitous access the system provided - "(a guest) fell to wondering how a ball game came out while seated by a campfire with Mr Hearst, a day's ride from the castle. 'I'll tell you' volunteers Mr Hearst and, fumbling with the rock against which he was leaning, pulls from there a telephone, asks for New York, and relieves his guest's curiosity."

Assembly room

The assembly room is the main reception room of the castle, described by Taylor Coffman, in his 1985 study, Hearst Castle: The Story of William Randolph Hearst and San Simeon, as "one of San Simeon's most magnificent interiors." The fireplace, originally from a Burgundian chateau in Jours-lès-Baigneux, is named the Great Barney Mantel, after a previous owner, Charles T. Barney, from whose estate Hearst bought it after Barney's suicide. The mantel had been acquired for Barney by society architect Stanford White and Kastner notes the major influence of White's style on a number of rooms at Hearst Castle, in particular the assembly room and the main sitting room in Casa del Mar. The ceiling is from an Italian palazzo. A concealed door in the paneling next to the fireplace allowed Hearst to surprise his guests by entering unannounced. The door opened off an elevator which connected with his Gothic suite on the third floor. The assembly room, completed in 1926, is nearly 2,500 square feet in extent and was described by the writer and illustrator Ludwig Bemelmans as looking like "half of Grand Central station."

The room held some of Hearst's best tapestries. These include four from a set celebrating the Roman general Scipio Africanus, designed by Giulio Romano, and two copied from drawings by Peter Paul Rubens depicting The Triumph of Religion. The need to fit the tapestries above the paneling and below the roof required the installation of the unusually low windows. The room has the only piece of Art Nouveau decorative art in the castle, the Orchid Vase lamp, made by Tiffany for the Exposition Universelle held in Paris in 1889. Bought by Phoebe Hearst, who had the original vase converted to a lamp, Hearst placed it in the assembly room in tribute to his mother.

Refectory

The refectory was the only dining room in the castle, and was built between 1926 and 1927. The choir stalls which line the walls are from the La Seu d'Urgell Cathedral in Catalonia, Spain, and the silk flags mounted on the walls are Palio banners from Siena, Italy. Hearst originally intended a "vaulted Moorish ceiling" for the room but, finding nothing suitable, he and Morgan settled on the Italian Renaissance example, dating from around 1600, which Hearst purchased from a dealer in Rome in 1924. Victoria Kastner considered that the flat roof, with life-size carvings of saints, "strikes a discordant note of horizontality among the vertical lines of the room." The style of the whole is Gothic, in contrast to the Renaissance approach adopted in the preceding assembly room. The refectory is said to have been Morgan's favorite interior within the castle. The design of both the refectory and the assembly room was greatly influenced by the monumental architectural elements, especially the fireplaces and the choir stalls used as wainscoting, and works of art, particularly the tapestries, which Hearst determined would be incorporated into the rooms. The central table provided seating for 22 in its usual arrangement of two tables, which could be extended to three or four, on the occasion of larger gatherings. The tables were sourced from an Italian monastery and were the setting for some of the best pieces from Hearst's collection of silverware. One of the finest is a wine cooler dating from the early 18th century and weighing 14.2 kg by the Anglo-French silversmith David Willaume.

Library

The library is on the second floor, directly above the assembly room. The ceiling is 16th century Spanish, and a remnant is used in the library's lobby. It comprises three separate ceilings, from different rooms in the same Spanish house, which Morgan combined into one. The fireplace is the largest Italian example in the castle. Carved from limestone, it is attributed to the medieval sculptor and architect Benedetto da Maiano. The room contains a collection of over 5,000 books, with another 3,700 in Hearst's study above. The majority of the library collections were sold at sales at Parke-Bernet at 1939 and Gimbels in 1941. The sales saw the disposal of some of the best items, including sets, often signed, of first editions by Charles Dickens, Hearst's favorite author. The library is also the location for much of Hearst's important holding of antique Greek vases.

Cloisters and the Doge's Suite  

The cloisters form a grouping of four bedrooms above the refectory and, along with the doge's suite above the breakfast room, were completed in 1925–1926. The doge's suite was occupied by Millicent Hearst on her rare visits to the castle. The room is lined with blue silk and has a Dutch painted ceiling, in addition to two more of Spanish origin, which was once the property of architect Stanford White. Morgan also incorporated an original Venetian loggia in the suite, refashioned as a balcony. The suite leads on to Morgan's inventive North and South Duplex apartments, with sitting areas and bathrooms at entry level and bedrooms on mezzanine floors above.

Gothic suite

The gothic suite was Hearst's private apartment on the third floor. He moved there in 1927. It comprises the gothic study or library and Hearst's own gothic bedroom and private sitting room. The ceiling of the bedroom is one of the best Hearst bought; Spanish, of the 14th century, it was discovered by his Iberian agent Arthur Byne who also located the original frieze panels which had been detached and sold some time before. The whole was installed at the castle in 1924. The space originally allocated for the study was too low to create the impression desired by Morgan and Hearst, a difficulty Morgan surmounted by raising the roof and supporting the ceiling with concrete trusses. These, and the walls, were painted with frescoes by Camille Solon. Light was provided by two ranges of clerestory windows. The necessity of raising the roof to incorporate the study occasioned one of the few instances where Hearst hesitated, "I telegraphed you my fear of the cost...I imagine it would be ghastly", and Morgan urged further changes and expense. The result vindicated Morgan. The study, completed in 1931, is dominated by a portrait of Hearst at age 31, painted by his life-long friend, Orrin Peck.

Celestial suites  

The celestial bedrooms, with a connecting, shared, sitting room, were created between 1924 and 1926. The bell towers were raised to improve the proportions of the building, and the suites constructed in the spaces created below. The relatively cramped spaces allowed no room for storage, and en-suite bathrooms were "awkwardly squeezed" into lower landings. Ludwig Bemelmans, a guest in the 1930s, recalled; "there was no place to hang your clothes, so I hung mine on wire coat hangers that a former tenant had left hanging on the arms of two six-armed gold candelabra, the rest I put on the floor". The sitting room contains one of the most important paintings in Hearst's collection, Bonaparte Before the Sphinx (1886) by Jean-Léon Gérôme. The suites are linked externally by a walkway, the celestial bridge, which is decorated with elaborate tiling.

North and South wings

The north, or billiard, and the south, or service, wings complete the castle and were begun in 1929. The north wing houses the billiard room on the first floor, which was converted from the original breakfast room. It has a Spanish antique ceiling and a French fireplace and contains the oldest tapestry in the castle, a Millefleur hunting scene woven in Flanders in the 15th century. The spandrel over the doorcase is decorated with a frieze of 16th century Persian tiles depicting a battle. The 34 tiles originate from Isfahan and were purchased by Hearst at the Kevorkian sale in New York in 1922. The theater, which leads off the billiard room, was used both for amateur theatricals and the showing of movies from Hearst's Cosmopolitan Studios. The theater accommodated fifty guests and had an electric keyboard that enabled the bells in the carillon towers to be played. The walls are decorated in red damask, which originally hung in the assembly room, and feature gilded caryatids.

The upper stories of the north wing were the last to be worked upon and were never completed. Activity recommenced in 1945 and Morgan delegated the work to her assistant, Warren McClure. Many of the rooms are unfinished but Aidala considers that the bathrooms in the wing represent "first-rate examples of streamline design. The service wing contains the kitchen. The hotel-scale units and worktops are constructed in Monel Metal, an expensive form of nickel alloy invented in 1901. The wing contains further bedroom suites, a staff dining room and gives entry to the 9,000-square-foot basement which contained a wine cellar, pantries, the boiler plant which heated the main house, and a barber/hairdressing parlour, for the use of Hearst's guests.