The site of the deadly Triangle Shirtwaist Factory Fire.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Cryptic messages embedded in the New York City sidewalk.

Visit the monolithic tomb of America's most famous general.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Plot your trip through the city on the sidewalk.

An annual extravaganza of Broadway theater memorabilia.

Wine bottle sculpture with a ship's stateroom inside.

Lie in a hammock where George Washington stood.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

From scholastic to sepulchral - now under reconstruction.

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

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

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

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

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

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.

More gold than anywhere else, ever.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A hands-on traveling collection of the innovative devices of yesteryear.

Elevated freight railway turned wildly successful urban park.