A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Reverend Jen's unique museum/living room showcases her troll collection.

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

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

A dilapidated dock tells the story of Titanic's missed arrival.

A semi-scholarly approach to sex.

More gold than anywhere else, ever.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

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

New York City's smallest piece of private property.

Elevated freight railway turned wildly successful urban park.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

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

Try not to get slimed in Tribeca.

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.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

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