Check Out Real Estate CEO’s Palatial $40 Million Park Avenue Apartment

David Simon, CEO of Simon Property Group, has listed his full-floor residence at a desirable Upper East Side co-op for $39.5 million with Douglas Elliman.

The decoration of the grand apartment is a far cry from the malls that made Simon wealthy. It takes up the entire 4th floor of 625 Park Avenue, a limestone-clad co-op designed by J.E.R. Carpenter in 1931. It has six bedrooms, seven full bathroom, a full gym, a billiards room, a screening room and a library. Several rooms have fireplaces.

Simon and his wife Jacqueline Simon bought the two apartments on the 4th floor for $25 million in 2011, according to public records. Then they combined the two apartments into a 7,300 square foot residence, with help from architecture and design firm Ingrao Inc.

Check out exclusive photographs of the apartment’s interior from FORBES below: