Fair Field, Sagaponack, New York
Photo: dewebsite
This massive mansion belongs to Ira Rennert, a very wealthy bond trader, and is located in the Hamptons which is arguably the most expensive zip code in the country. Rennert had the home built in the 1990s for an estimated $110 million but it has since been evaluated at nearly double that. It has every amenity you can think of including a 164 seat movie theater, 21 bedrooms, and even two pool houses.