This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

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

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.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Sniff the Titan Arum's rotting flesh.

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

One-time largest man-made structure in the world will be a park in 30 years.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

A town trapped in time - 1958 to be exact.

Final resting place of two dozen New York City harbor ships.

Once America's longest-manned military fort, now an abandoned hulk.

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

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

The competition: breathe deeply as long as you can.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

This abandoned subway station can still be seen on regular commuter trips.

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

The oldest living organism in New York City. Maybe.

A long abandoned hospital building on the outskirts of NYC.

A semi-scholarly approach to sex.