This is one of the biggest and most beautiful houses in the world. The largest private house in the United States is situated in thirty kilometers from Orlando city. The house belongs to billionaire David Siegel. House has 30 chic rooms, adjoining pool and a bowling hall, that is truly magnificent. There are also 23 bathrooms with Jacuzzi, children's games room, with their own small theater, three more swimming pools, a garage that can accommodate 20 cars, two tennis courts, and one baseball field.