Set in the former NYPD gym, The Police Building is a fantastic four-bedroom apartment at one of Manhattan's most iconic addresses. Designed by Charles Gwathmey, it measures 6,600 square feet, much of that taken up by the great room. With 25-foot barrel-vaulted ceilings, three skylights, exposed steel trusses, and multiple sitting and dining areas, it's ideal for entertaining large groups. It shares the first floor with a chef-grade kitchen, wine cellar, the master bedroom with dual bathrooms, a sauna, and walk-in closets, and a private terrace. Upstairs lie the rest of the bedrooms, as well as an open library that sits above the master bedroom and looks over the great room below.