The first piece of public art dedicated to LGBT rights.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

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

Discover the taste of mold.

Little Red Lighthouse under the George Washington Bridge.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

The most confusing clock in New York.

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

The notorious headquarters of a corrupt political machine.

There must be a pun in this haystack somewhere...

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

A hidden "place of interment for gentlemen."

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

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

An annual extravaganza of Broadway theater memorabilia.

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

Avoid gangster interaction while window-shopping.

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

An artist's cute bronze subway sculptures belie his violent artistic past.

Lie in a hammock where George Washington stood.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.