Located in between Queens and the Bronx, in 1885 North Brother Island was used to build a hospital complex to quarantine and treat people suffering from smallpox and typhoid fever. In the 1950’s it was turned into a rehab center. The entire island has been abandoned since 1963.
Now a bird sanctuary, the island is currently abandoned and off-limits to the public. Most of the original hospitals’ buildings still stand, but are heavily deteriorated and in danger of collapse. A dense forest conceals the ruined hospital buildings, and from the 1980s through the early 2000s it supported one of the area’s largest nesting colonies of Black-crowned Night Heron. However as of 2011 this species has abandoned the island for unknown reasons.
See also : http://imgur.com/a/J7sv8?gallery