William Randolph Hearst's Castle is a 165-room Moorish castle with 127 acres of gardens, terraces, pools and walkways, furnished with Spanish and Italian antiques and art, flanked by three large guest houses. In its heyday, Hearst Castle had a zoo, tennis courts and two magnificent swimming pools.
Today, visitors can tour it on several themed tours, and it's one of the state's most popular tourist attractions.