A memorial marks the library lobby where Langston Hughes' ashes are buried.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

The first piece of public art dedicated to LGBT rights.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

The mysterious image is believed to show Edward Hyde, 3rd Earl of Clarendon, in a beautiful blue dress.

One of the only single-person private gravesites in New York City.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

At this hidden studio, the dying art of taxidermy is alive and well.

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

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Built just after the American Revolution, the oldest row house in New York City still stands in Chinatown.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

Obscure and obsolete publications are given new life as works of art.

A prized globe signed by Amelia Earhart and Charles Lindbergh sits in the Brooklyn office of the American Geographical Society.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.