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

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

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

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

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

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

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

One kilometer of thick brass rod laid out before your eyes.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

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

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

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

After surviving abandonment, this powerful Latin American mural is alive again.