On the Market: Four-Story, 16-Room Lenox Hill Penthouse Wants $22 Million

We've never heard much of anything about Claremont House , located at 52 East 72nd Street, but the 30-year-old, 14-unit condominium building has just put itself on the map with a listing for its 6,300-square-foot penthouse, which encompasses the building's top four floors .

http://ny.curbed.com/archives/2013/04/13/fourstory_16room_lenox_hill_penthouse_wants_22_million.php