Hearst Castle, known formally as La Cuesta Encantada (Spanish for "The Enchanted Hill"), is a historic estate in San Simeon, located on the Central Coast of California. Conceived by William Randolph Hearst, the publishing tycoon, and his architect Julia Morgan, the castle was built between 1919 and 1947. Today, Hearst Castle is a museum open to the public as a California State Park and registered as a National Historic Landmark and California Historical Landmark. George Hearst, William Randolph Hearst's father, had purchased the original estate in 1865 and Camp Hill, the site for the future Hearst Castle, was used for family camping vacations during Hearst's youth. In 1919, William Randolph inherited some $11,000,000 () and estates including the land at San Simeon. He used his fortune to further develop his media empire of newspapers, magazines and radio stations, the profits from which supported a lifetime of building and collecting. Within a few months of the death of his mother, Phoebe Hearst, he had commissioned Morgan to build "something a little more comfortable up on the hill", the genesis of the present castle. Morgan was an architectural pioneer; "America's first truly independent female architect", she was the first woman to study architecture at the School of Beaux-Arts in Paris, the first to have her own architectural practice in California and the first female winner of the American Institute of Architects Gold Medal. She worked in close collaboration with Hearst for over twenty years, and the castle at San Simeon is her best-known creation. 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.