The Octagon, Historic building in Roosevelt Island, New York.
The Octagon is a historic octagonal building and attached apartment block complex located in Roosevelt Island, New York City.
Originally built in 1834 as the main entrance to the New York City Lunatic Asylum, The Octagon was one of the first institutions in the United States to treat mental illness.
The Octagon has been featured in several films and television shows due to its unique architecture and historical significance.
Today, it serves as a luxury apartment community with amenities such as a fitness center, swimming pool, and tennis courts.
The Octagon is one of the few surviving remnants of the original New York City Lunatic Asylum.
Location: Manhattan
Architect: Alexander Jackson Davis
Website: octagonnyc.com/bldgHistory.asp
Source: Wikimedia