Three-story slide through the New Museum.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

Harlem park dedicated to compulsive hoarders killed by their own junk.

Phil Mortillaro uses keys to bring art back to the Village.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

NYC's legendary underground network for bovine transportation.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Little Red Lighthouse under the George Washington Bridge.

This abandoned subway station can still be seen on regular commuter trips.

Lie in a hammock where George Washington stood.

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

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

A legendary speakeasy bookstore returns from the brink.

Slyly buy a shake in the Parker Meridien lobby.

A living archive of urban activism and space reclaimed.

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

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Plot your trip through the city on the sidewalk.

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

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

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

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

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

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