6Fairfield Pond – New York, USA

Estimated Price: $248 Million. Fairfield Pond is the residence of Ira Rennert, an American billionaire.

This sprawling estate covers 63 acres in the Hamptons and features 29 bedrooms, 39 bathrooms, a massive dining room, and a 91-foot-long dining table.The property also includes a private power plant, tennis courts, a basketball court, and a 164-seat theater. Its vast size and array of amenities make it one of the most expensive private homes in the world.