Bill Gates
Bill Gates, the richest man in the world, owns this stunning waterfront home in Medina, Washington. The estate, which he named Xanadu 2.0, is valued at $147.5 million. It has an indoor and outdoor pool, a bowling alley, a gigantic library, a state-wide server system. A pin is given to visitors that changes the temperature of the home, lighting, and music in each room they enter.