A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

HBO series' stage tucked away in a Greenpoint lot is the largest theatrical set of its kind in the United States.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

This seemingly unremarkable boulder is said to bear the hoofprint of the devil himself.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

This slender three-story building has also had several famous residents.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

A prohibition era watering hole for the police.

The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Hundreds of antique bank vault locks on display in New York City.

The best B-movies filmed on a shoestring budget were born here.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

19th century cemetery hidden in Brooklyn's Prospect Park.

Phil Mortillaro uses keys to bring art back to the Village.

Take in a rare, face-to-face glimpse of Lady Liberty at this tucked away Red Hook park.

The most confusing clock in New York.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

A notorious punk house turned co-op.

The notorious headquarters of a corrupt political machine.

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.