The biggest house in the United States is in Windermere, Florida and belongs to a 77-year-old billionaire named David Siegel.

The house is 90,000 square feet and includes...

15 bedrooms, 30 bathrooms, 10 kitchens, 2 tennis courts, a full baseball field, a grand ballroom that can hold 500 people, an indoor roller skating rink, nightclub, art gallery, wine gallery, 10,000 square foot spa, 2 movie theaters, indoor and outdoor pools, 2 elevators, and a 20 car garage.

If you're interested in owning this palace, Mr. Siegel says if he ever decides to sell it, he will list it for $100 million.