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

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

From scholastic to sepulchral - now under reconstruction.

An abandoned asylum where patients have been forgotten but their possessions remain.

The famous author's cottage hideaway.

The loneliest island in New York.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

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

During the holidays, a vintage subway train whisks New Yorkers back in time.

A popular European tradition makes its way to the states on one of America's most famous bridges.

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 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.

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

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

The oldest surviving synagogue in New York City is now a soaring art space.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.