<Tr> <Th> Added to NRHP </Th> <Td> June 22, 1972 </Td> </Tr> <Tr> <Th> Designated CHISL </Th> <Td> April 28, 1958 </Td> </Tr> <P> Hearst Castle is a National Historic Landmark and California Historical Landmark mansion located on the Central Coast of California, United States . Designed by architect Julia Morgan, it was a residence for newspaper magnate William Randolph Hearst between 1919 and 1947 . Hearst died in 1951, and it became a California State Park in 1954 . The site was opened to visitors in 1958 . Since that time it has been operated as the Hearst San Simeon State Historical Monument where the estate, and its considerable collection of art and antiques, is open for public tours . Despite its location far from any urban center, the site attracts "millions of travelers each year". </P> <P> Hearst formally named the estate "La Cuesta Encantada" ("The Enchanted Hill"), but usually called it "the ranch". Hearst Castle and grounds are also sometimes referred to as "San Simeon" without distinguishing between the Hearst property and the adjacent unincorporated area of the same name . </P>

When did hearst castle became a state park