Biggest Privately Owned Mansions Antilia, the private home of Mukesh Ambani, is the largest private residence in the world by square footage. True False None The Biltmore Estate in Asheville, North Carolina, is still privately owned. True False None Windsor Castle is the largest privately owned residence in Europe. True False None The One, a mansion in Bel-Air, California, is the largest home in the United States by square footage. True False None Fairfield Pond, owned by billionaire Ira Rennert, has its own private power plant. True False None Time's up Most Popular Most Popular
