An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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

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

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.

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

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

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

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

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