A Rare Penthouse Sanctuary with an Expansive Private Terrace Perched atop a classic Upper East Side cooperative, Penthouse A at 225 East 79th Street is a grand, light-filled three-bedroom, three-bathroom duplex offering over 1,000 square feet of private outdoor wrap-around space and a layout that seamlessly blends prewar elegance with contemporary comfort. From the moment you step into the priva...