A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

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

Become a prohibition rebel.

Ride the subways of yesteryear.

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

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

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

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.

New York's oldest magic store.

Try not to get slimed in Tribeca.

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

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

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

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