The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

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

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

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

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

A natural gas leak provides a flickering flame beneath a waterfall.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A hip bar decorated with walls of golden skulls.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Tucked in the back of this amazing antique store is an important piece of medical history.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

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

An icon among Florida's pre-Disney tourist attractions.

A failed, un-built suburb that has been going feral for decades.