4 East 75th Street, New York, N.Y. 10021
Sale price: $36,500,000
This five-story limestone mansion, previously acquired by billionaire investor J. Christopher Flowers for $53.6 million in 2006, sold in August to art dealer Larry Gagosian, reported the New York Observer. The massive Upper East Side townhouse is 50 feet wide and measures 21,700 sq. ft.
*Sale data: StreetEasy.com
Photography by: William Halsey/Bloomberg Businessweek