Villa Leopolda is the most expensive property on this list, valued at 1.2 billion US Dollars
As you have read in the title, this property is worth more than a billion US Dollars, and it should be in a category of its own. Villa Leopolda is a mansion in the French Riviera, more specifically in the commune of Villefranche-sur-Mer.
Its marvelous design is reminiscent of the Belle Epoque and includes cascading terraces, a huge swimming pool, 19 bedrooms, and it covers around 18 acres of land. Its most recent owner was Lily Safra, a billionaire and socialite of Brazilian-Moneguasque origin.