Bill Gates – Net Worth:  $97.9 Billion – $147.5 Million, Washington

Bill Gates puts to shame most people we consider as ridiculously rich on this list because, as of 2019, the Microsoft founder is estimated to be worth $97.9 billion. With such massive wealth, it’s only fitting that Gates would purchase an estate worth $147.5 million. The sprawling 66,000-square-foot mansion was christened Xanadu 2.0 as a tribute to the fictional mansion occupied by the protagonist in the cult-hit movie, Citizen Kane. The opulent mansion offers seven bedrooms and a whopping 18.75 bathrooms. Naturally, technology runs throughout the property and guests receive pins to interact with sensors throughout the house when controlling lighting and temperature preferences.