Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

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.

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

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Once America's longest-manned military fort, now an abandoned hulk.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

Bowl in splendor, if you're lucky.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

From scholastic to sepulchral - now under reconstruction.

This abandoned subway station can still be seen on regular commuter trips.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

This semi-hidden Manhattan restaurant is based out of a loading dock.

“Invented in Key West, Perfected in Brooklyn."

The loneliest island in New York.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

A once grand hotel is being retaken by the wilderness it once capitalized on.

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

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

One of the last Jazz Age "Wonder Theaters" in New York City.

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