Villa Les Cèdres (France) - Completed in 1830 - Height: N/A

Detail: Nestled on the French Riviera, Villa Les Cèdres is a historic mansion with lush gardens and is often referred to as the world's most expensive home.

Interesting Fact: It was built for the King of Belgium and later owned by the Marnier-Lapostolle family, creators of Grand Marnier liqueur.