The mosaic Star of David at the front of this store hints that it's no ordinary Italian grocer.

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

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

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

Holding the most bodies of any cemetery in the United States.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

An unassuming secret door once led to a legendary watering hole.

A posh members-only club with a literally dramatic history.

Known as the "Forgotten City" it was home to industry, riots, artists, squatters, and to one of the largest single disaster fires in New York City.

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

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Ride the subways of yesteryear.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

The oldest surviving synagogue in New York City is now a soaring art space.

More gold than anywhere else, ever.

Nondescript elevator doors open to reveal a stunning, surreal world.

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.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

The loneliest island in New York.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.