Greystone Mansion.

Completed in 1928 as California's most expensive home, this sprawling 55-room Tudor Revival estate was built by oil tycoon Edward L. Doheny for his son, Ned. Just months after moving in, Ned and his assistant were found dead here under mysterious circumstances, cementing the mansion's place in local lore. Today, the city-owned property is a public park famed for its manicured English gardens, stone fountains, and sweeping views across the Los Angeles Basin. While the limestone mansion’s interior—complete with a hidden bar and bowling alley—is rarely open to the public, the exterior serves as a ubiquitous Hollywood backdrop, recognizable from films like *The Big Lebowski* and *Ghostbusters II*. It remains a tranquil, atmospheric slice of Gilded Age wealth high above Beverly Hills.