But it's the south tower that holds the grandest residences, according to Modlin. That means that Moore's penthouse crowning the south tower, and stretching across the 26th, 27th and 28th floors, may just be the grandest of them all.

Enter the lobby at 145 Central Park West, waltz into one of the San Remo's gilded Art Deco elevators and exit on the 26th floor. This is "the public level" of Moore's triplex. The spacious living room enjoys three exposures, more than 20 feet of Central Park frontage and an impressive turquoise ceramic tile fireplace. The library sits on the southeast corner of the tower overlooking both Central Park and the city, and if you take a glance up to the ceiling you'll spot some of the San Remo’s original and elaborate plaster molding.