Most Expensive Houses in the world

1. Buckingham Palace -- $1.55 billion

1. Buckingham Palace -- $1.55 billion The official home of the British monarchy has 775 rooms and is dripping with priceless furniture a...

2. Antillia -- $1 billion Owned by Indian billionaire industrialist Mukesh Ambani, this 27-story, 400,000 square-foot south-Mumbai estat...

3. Villa Leopolda -- $750 million This palatial series of villas and gardens located in the town of Villefranche-sur-Mer on the French R...

4. Rutland Gate Mansion -- $436.5 million The mansion at 8a Rutland Gate in London's Hyde Park neighborhood has been empty for thre...

5. Four Fairfield Pond -- $248.5 million Located in Sagaponack, N.Y., two villages over from ultra-chic East Hampton, this 29-bedroom es...

6. 18-19 Kensington Palace Gardens -- $222 Million Owned by Lakshmi Mittal, head of the world's largest manufacturer of steel, this L...

7. Ellison Estate -- $200 million Oracle ( ORCL ) billionaire Larry Ellison owns this Woodside, Calif. home that sits on a 23-acre comp...

8. Hearst Castle -- $191 million Owned by William Randolph Hearst's trustees, this 27-bedroom San Simeon, Calif. home is now a part o...

9. Seven the Pinnacle -- $155 million Owned by Tim Blixseth, an American real-estate developer and musician, and his ex-wife Edra, this h...

10. Kensington Palace Gardens -- $140 million Owned by Russian billionaire Roman Abramovich, who heads the private investment company Mil...

The 11 Most Obscenely Expensive Homes in the World and Their Filthy Rich Owners NEW YORK ( TheStreet ) -- If you have $437 million ...