Bill Gates – Estimated $178.3 Million, Washington

Being one of the people in the world with the highest net worth, Bill Gates definitely got to invest in a gigantic and modern estate. His house in Washington is reported to have cost him around $178.3 million but this was nothing to him since he is worth over $97 billion. The 66,000-square-foot mansion is a house from the future because of its technological advancements.

Everything about his residence is enormous – the vintage library, pool, and gym for instance. Bill Gates is a big fish in the tech world, but he’s also dedicated to giving back, and he’s donated billions to multiple charity causes over the years.