During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

An unconventional space for art and science housed in a massive old warehouse.

Check out the underground party scene at the "Burning Man of Brooklyn."

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

“Invented in Key West, Perfected in Brooklyn."

This innocent-looking townhome is actually a subway exit.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

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

Bowl in splendor, if you're lucky.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

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

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A B.Y.O.B. Mexican cantina lives inside one of the last tortilla factories in Brooklyn.

An arcade packed with a rotating collection of unique independent video games.