It is very difficult to actually point out the most expensive house in the world, so let's give you 2 of the most expensive houses in the world as of 2010, and tell you who has the most expensive house in the world among them.

Antilla, Mumbai

'Antilla' is the first $1 billion home of the world! Situated in south Mumbai (Financial capital of India in the state of Maharashtra) the home towers over 570 feet. Owned by Mukesh Ambani the world's fifth richest man and the head of Reliance Industries, Antilla is a custom built 27 storied mansion. The real estate appraisal value is more than any other property in the world!

The home has ballrooms, lounge areas, lobbies, palatial bathrooms and double height ceilings. These ceilings are fitted with expensive chandeliers. The most expensive furniture, cutlery and decors adorn the interiors of the home. There are private health clubs for each member of the family, it is reported (all 5 of them!) There are six levels of car parking garages for the collection of 168 family cars, and retractable stairs. There is a private cinema as well and each level boasts of a lush garden. Most of the house is built from glass and has about 600 servants for it's maintenance. Ambani reports that the floor space in his home is much more than that of the palace of Louis XIV at Versailles. As of the year 2010 Antilla holds the spot for the most expensive house because the price is incomparable to any other.

Villa Leopolda, French Riviera

The Villa Leopold is situated in France and is an 80,000 square foot chateau. It is priced at over $506 million. The villa was built by the Belgium king Leopold II in 1902 as a gift for his mistress. The villa was bought by the Lebanese businessman Edmond Safra and his wife Lily. Though after Edmond Safra's death, the estate was sold to a Russian businessman. It has been rumored that several rich men like Bill Gates have owned the villa at one point or the other.

The front of the villa estate has been landscaped exquisitely with trees that are lined throughout the boundary walls. Beige and pink stairs lead up to the villa. The villa has 18 bedrooms, gargantuan bathrooms, fireplaces, exquisite antique furnishings and terraces. It also has several kitchens, bowling alleys, sport courts, a cinema theater and mini-orchards of lemon, cypress and olive trees. The are rare marble works and period stones and arts that are fitted everywhere.

Most Expensive House in the World for Sale

The most expensive house for sale stands at a $122.2 million and is situated in Windlesham, England. A great real estate investment, Updown Court has 103 rooms, 5 swimming pools, squash courts, bowling alleys, tennis courts, heated marble driveway, a helipad, a private theater, 24 carat gold leafing on the mosaic floor and an underground garage that has space for 8 limousines! This home is about $50 million more than the richest home in USA that is for sale.

The most expensive house in the world is a beautiful sight to behold and the details of its luxuries are really something that is guaranteed to make your jaw drop!

Most Expensive House in the US for Sale

The former home of super TV producer Aaron Spelling, this mansion is being sold by his widow Candy Spelling. Mariah Carey and Nick Cannon were rumored to be looking at the property, but eventually bought something less extravagant. With 123 rooms and 64 000 square feet, made of marble block, it is the most expensive house in the United States.