4. 440 Golden Gate Ave, Belvedere, CA Price: $47,500,000 Size: 5 bedrooms, 10 bathrooms, 9,235 sqaure feet, 0.94 acres Built in 1895, Locksley Hall is on the National Registry of Historic Places. With sweeping views of the Golden Gate and San Francisco, its no wonder the sale of this historic mansion broke the record in Marin County. Belvedere 3. 1210 Benedict Canyon Drive, Beverly Hills, CA Price: $47,851,500 Size: 8 bedrooms, 13 bathrooms, 19,299 square feet, 2.69 acres Less than a mile from Sunset Boulevard, this extravagant mansion was purchased by casino mogul Steve Wynn.