A palatial residence on the 16th, 17th and 18th floors of a prestigious white-glove co-op on Park Avenue has just hit the market for $29,750,000 — and it’s just as impressive as the Art Deco building it’s set in. The massive 14-room residence spans three floors at 895 Park Avenue, an Art Deco masterpiece built in 1930 and designed by Sloan & Robertson, one of the major New York architectural...