Learn about the last river many crossed to find freedom from slavery in the United States.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

There are owls with glowing eyes in Herald Square.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

This mysterious marker puzzles pedestrians and infuriates geographers.

In the middle of suburban Staten Island, a nearly 150-year-old bakery is preserving the art of a disappearing New York treat.

Records of the dead describe the myriad odd ways people used to die.

A whimsical, but often overlooked clock in Park Avenue.

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

This diesel train serviced the Brooklyn waterfront for more than three decades.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

The French deconstructionist had a weakness for baked goods.

"Leave a He-Man, Take a Transformer" and share a story about your real-life superhero.

The rare American Civil War-era weapon was never fired in anger.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

If you were standing here on October 5th, 1950, you'd be dead.

This outdoor gallery of sculptures along the East River was once a landfill.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.