The famous author's cottage hideaway.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The loneliest island in New York.

Peek through the gates at this oasis from the city, full of Old English charm.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

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

Unique antiquarian shop specializing in globes, maps, and prints.

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

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

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Become a prohibition rebel.

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

More gold than anywhere else, ever.

A hip bar decorated with walls of golden skulls.

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

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A hands-on traveling collection of the innovative devices of yesteryear.

New York's oldest magic store.

One of Edinburgh's oldest pubs hides a 19th-century skittles alley in the back.

A book bound in the skin of an infamous criminal, along with countless other specimens.