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

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

This collection of grinning ephemera has grown from basement to Brooklyn.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Once America's longest-manned military fort, now an abandoned hulk.

A bit of retro transportation flair preserved in the world's largest department store.

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

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

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

Nikola Tesla's former home contains an homage hidden from plain sight.

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

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

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

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

New York City's smallest piece of private property.

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

The "Seinfeld" diner.

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

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.