A Showstopping Park Avenue Penthouse Duplex with Sweeping Central Park Views Welcome to a rarely available, gut-renovated Penthouse Duplex soaring above Park Avenue. Perched atop a distinguished white-glove prewar co-op, this one-of-a-kind home spans the 21st and 22nd floors—high enough to clear the skyline to the West, offering jaw-dropping, unobstructed views of Central Park and the Manhattan c...