Take a Look Inside the Most Expensive Celebrity Mansions

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Bill Gates’s Xanadu 2.0

Bill Gates may have lost his title as the world’s second-richest man, but only because of his generous philanthropic endeavors. He’s donated more than $35 billion to the Bill and Melinda Gates Foundation and has a net worth of $107 billion. When he’s not donating his fortune to charitable organizations, he’s spending time at his home—which cost him $127 million.