With a net worth that's estimated to be as much as $80.1 billion, Microsoft cofounder Bill Gates is the richest man in the world.
Gates has exactly the kind of real-estate portfolio you would expect from a billionaire, from a Washington mansion worth $123 million to multiple horse ranches across the US.
Gates has also made several secretive purchases through his ultra-private investment firm, Cascade.
Gates spends most of his time at his 66,000-square-foot mansion in Medina, Washington. It took Gates seven years and $63 million to build this behemoth of a house, which is filled with lots of high-tech features. He purchased the lot for $2 million in 1988, but it's now worth an estimated $123 million.
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Inside, a high-tech sensor system helps guests monitor a room's climate and lighting. There's also a trampoline room, a 60-foot swimming pool, six kitchens, and a dining hall that can accommodate up to 200 people.
Read more about his house in Medina »
In October 2014, Gates purchased the 228-acre Rancho Paseana for $18 million. The property includes a racetrack, guesthouse, office, veterinarian's suite, orchard, and five barns.
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