- Villa Les Cedres – Saint-Jean-Cap-Ferrat, France
Villa Les Cedres, located in Saint-Jean-Cap-Ferrat, France, is valued at $350 million. The 18,000 square foot mansion was built in 1830, and has been owned by a number of different individuals over the years, including the King of Belgium. The property features a private beach, a ballroom, and a library with over 3,000 books.