26. (TIE) This sleek and stylish duplex on Manhattan's Upper East Side, owned by billionaire hedge funder Steve Cohen, has all of the most modern features, including a state-of-the-art chef's kitchen, media and entertainment room, reception room, dressing rooms, and staff rooms.
Price: $72 million
If that all isn't impressive enough, the views from the expansive glass windows are sure to amaze.