Some of the most expensive homes in the world include the Kensington Palace Gardens in London, Seven the Pinnacle of the Yellowstone Club in Montana, and the Ellison Estate in California. Buckingham Palace is technically the world's most expensive home at a valuation of about $1.5 billion dollars.
Kensington Palace Gardens is on "Billionaire's Row" in London, which is located along The Bishops Avenue. It is owned by Russian billionaire Roman Abramovich, who also owns the Chelsea Football Club and the investment firm Millhouse LLC.
Seven the Pinnacle is in Big Sky, Montana. The property is a golf and ski community for wealthy clients. The property is owned by real estate developers Tim and Edra Blixseth.
The Ellison Estate is the home of Larry Ellison, co-founder of Oracle and one of the richest men in the world. The property is located in Woodside, California, and boasts 10 buildings and a man-made lake.
California is also home to the Hearst Castle in San Simeon. It was originally built as a private residence by William Randolph Hearst, but it is now a heritage site and is open to tourists. It was also used in the filming of "The Godfather." It is part of the Hearst San Simeon State Park.