Bill Gates's house
The house is loaded with high tech features like an underwater music system in the main swimming pool, and an individualized HVAC system. Xanadu 2.0 is earth-sheltered and has 66,000sqft/6,580sqm of living space, a gym with a trampoline room, a 23 car garage, 24 bathrooms, domestic servant quarters, banquet hall, and a private library. The lake shore has a beach with sand imported from a Caribbean island. The property taxes for Xanadu 2.0 are well north of $1,000,000.