This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A graffiti Mecca welcoming artists from around the world.

Elevated freight railway turned wildly successful urban park.

Unlock the secrets of the conjuring arts.

Cryptic messages embedded in the New York City sidewalk.

Offbeat arts organization that hosts exhibitions, events, and explorations.

A semi-scholarly approach to sex.

The saddest little diner in New York.

“Invented in Key West, Perfected in Brooklyn."

New York City's smallest piece of private property.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

The Underground Railroad passed right through this historic Brooklyn Heights church.

A working metal shop and venue for outrageous art and music shows in a former cannonball factory.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A decommissioned military complex that's now a modern industrial park.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A massive art collective tries a new take on Brooklyn's DIY music scene—by making it fully legal.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

An 1883 schoolhouse now home to collective of artists.

The loneliest island in New York.

This forgotten graveyard in rural New York State once served a pioneering hospital.