10 of the most extravagant mansions in the world and who own them (With Pictures)

7. Xanadu 2.0 – Seattle

If the richest man in the world didn’t have a spot on this list, it wouldn’t be much of a list now would it? Xanadu 2.0 is Bill Gates’ estate just outside of Seattle, Washington. The house is built into the landscape which helps regulate its temperature. Impressed yet? Well if not, he has a separate building for the pool, which has its own underwater sound system, six kitchens, 24 bathrooms and a library. He reportedly paid over $120 million for the house, and his guests can automatically control the temperature of each room as they enter.

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