188 East 76th Street, Apartment 29A | The Entire 29th Floor at The Siena Perched high above Lenox Hill, Apartment 29A at 188 East 76th Street offers a once-in-a-generation opportunity to own the entire 29th floor of The Siena Condominium—a full-circulating, 360-degree residence with panoramic views and dramatic architectural presence. Available for the first time in 25 years and originally purcha...