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

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

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

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

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

Ride the subways of yesteryear.

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

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

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

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

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

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

New York's oldest magic store.

Try not to get slimed in Tribeca.

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 terrific purveyor of natural history objects and curios.

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

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.