Greystone Mansion is a historic estate located in Beverly Hills, California. Built in 1928, it was designed by architect Paul Williams for the wealthy Norton Simon family. The mansion features 55 rooms and is set on 18.3 acres of beautifully landscaped gardens. Today, Greystone Mansion serves as a public park and is open for tours. It is a popular location for filming movies and television shows, showcasing its stunning architecture and picturesque surroundings. The estate is listed on the National Register of Historic Places, making it a significant landmark in the area.