A modern zoetrope on the New York City subway.

This humble historic facade hides a history of boozing and the gentlemanly sport of rat-fighting.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

As telephones become more essential and less stylish one historic Brooklyn building remembers the days when they were a grand celebration of communication.

Try not to get slimed in Tribeca.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

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

Ride the subways of yesteryear.

An accidentally hidden library containing the ephemeral history of New York.

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."

This recently uncovered ad for Lindsay's run at Mayor in 1965 had been hiding for decades underneath a billboard.

Visit the site of a subway powered by nothing more than air--and lots of it.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Con Edison’s exotic and heat-loving pests.

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

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.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

A huge resale shop for the cast-offs of the film & television industry.

This innocent-looking townhome is actually a subway exit.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.