Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A bit of retro transportation flair preserved in the world's largest department store.

An abandoned asylum where patients have been forgotten but their possessions remain.

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

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

An abandoned castle owned and ignored by Masons carries a cursed history.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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

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

Ride the subways of yesteryear.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A dilapidated dock tells the story of Titanic's missed arrival.

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

Elevated freight railway turned wildly successful urban park.

A crumbling hospital from the 1850s on Roosevelt Island.

This sculpture commemorates the first instance of an American president pardoning a turkey.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

This picturesque Victorian ghost town was once a thriving mill community.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.