This is intended to be a complete list of landmarks, designated by the New York City Landmark Preservation Commission, on the islands surrounding Manhattan. Some of these are also National Historic Landmark (NHL) sites, and NHL status is noted where known.
The Smallpox Hospital, sometimes referred to as the Renwick Smallpox Hospital and later the Maternity and Charity Hospital Training School, is an abandoned hospital located on Roosevelt Island in Manhattan, New York City. Originally designed by architect James Renwick, Jr., the 100-bed hospital opened in 1856, when the area was known as Blackwell's Island.
A century after it opened, the hospital was closed, and the building eventually fell into disrepair. It was listed on the National Register of Historic Places in 1972 and designated a New York City Landmark four years later, the only ruin in the city with that designation. After the completion of an ongoing $4.5 million stabilization project, the Smallpox Hospital ruins will be open to the public.