North Brother Island in the Bronx was the site of a historic hospital for contagious diseases. Today, it's designated as a wildlife preserve by the Parks department after being abandoned for half a century.
Kings Park Psychiatric Center on Long Island was one of the largest mental institutions on the East Coast. A craft room on the ground floor still held looms, half finished rugs, and murals painted by patients.
A raccoon peers through a doorway in the long-abandoned army hospital at Fort Totten. The defunct military base was designated a public park in 2005, but dozens of the area's historic structures have fallen into disrepair.