This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

The site where Joe Gallo kept his guns, pet lion, and launched an all out mob war in 1960s Brooklyn.

New York City's only preserved family home from the 19th century.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

Site of the first pathological and bacteriological research facility in the United States.

A terrific purveyor of natural history objects and curios.

The loneliest island in New York.

This Orthodox Church's exterior is rather unorthodox.

The famous author's cottage hideaway.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

An 1883 schoolhouse now home to collective of artists.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.