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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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

From scholastic to sepulchral - now under reconstruction.

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

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

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

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

More gold than anywhere else, ever.

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

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

New York City's smallest piece of private property.

Read a book next to a Midtown waterfall.

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

Try not to get slimed in Tribeca.

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.

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

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.