A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

This translucent sculpture represents a quintessential component of New York City's skyline.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A sculptural commentary on capitalism pokes up from the East River.

This was one of the first (and last) university-built and operated nuclear reactors.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

Discover the taste of mold.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

Salute the leader of the proletariat.

Little Red Lighthouse under the George Washington Bridge.

Rummage through this sunken ship, but leave your scuba gear at home.

The site of the deadly Triangle Shirtwaist Factory Fire.

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

NYC's legendary underground network for bovine transportation.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.