This abandoned subway station can still be seen on regular commuter trips.

The loneliest island in New York.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Nondescript elevator doors open to reveal a stunning, surreal world.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

A very classy 1920s-era bar right in Grand Central Station.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Ride the subways of yesteryear.

One of only two commuter aerial tramways in the United States.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

Read a book next to a Midtown waterfall.

A dilapidated dock tells the story of Titanic's missed arrival.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.