5Villa Les Cèdres – Saint-Jean-Cap-Ferrat, France

Value: $450 million

Villa Les Cèdres is an opulent 18,000-square-foot mansion located on the picturesque Cap Ferrat peninsula in the South of France.
Built in 1830, this historic villa was once owned by King Leopold II of Belgium and later by the Marnier-Lapostolle family, creators of Grand Marnier. The estate includes 14 bedrooms, an Olympic-sized swimming pool, a ballroom, and a vast botanical garden featuring 15,000 plants and rare species. Its timeless elegance and prime location have made it one of the most valuable properties in the world.