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

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

An unassuming secret door once led to a legendary watering hole.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

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

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Ride the subways of yesteryear.

More gold than anywhere else, ever.

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

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

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

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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

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

A hip bar decorated with walls of golden skulls.

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

Order scoops of pandan, lychee, and black sesame at this family-run institution.

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

A New York garbage depot holds a secret collection of weird and wonderful refuse.