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

This 220-year-old house is a reminder of New York City's Dutch past.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

Mysterious rocks that ring musically when struck.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Commemorating the spot where the famous scientist fed his pigeons.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

This monument pays tribute to the musicians responsible for creating the Sound Of Asbury Park.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

This former crime corner has been turned into an eclectic community center.

A reminder to choose water over wine since 1888.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

How a century-old glass factory in Queens became a concert venue and arts center.

The only subway station in the city that still makes use of gap fillers.

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

A controversial magical figure is hidden within a diorama of the city.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

Spiral-bound community recipes and antiquarian gems mingle at this small East Village shop.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

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