Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

An artist's cute bronze subway sculptures belie his violent artistic past.

Slyly buy a shake in the Parker Meridien lobby.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Peek through the gates at this oasis from the city, full of Old English charm.

A garment factory hides a small Dominican eatery in the hallway to its freight elevator.

This semi-hidden Manhattan restaurant is based out of a loading dock.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

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

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

Ride the subways of yesteryear.

A hip bar decorated with walls of golden skulls.

Read a book next to a Midtown waterfall.

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 semi-scholarly approach to sex.

Try not to get slimed in Tribeca.

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

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.

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