Harlem park dedicated to compulsive hoarders killed by their own junk.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.

The loneliest island in New York.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The preserved house of a jazz legend still echoes with his music.

The oldest continuously operating farm in New York State.

A long abandoned hospital building on the outskirts of NYC.