A semi-scholarly approach to sex.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Read a book next to a Midtown waterfall.

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

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

Become a prohibition rebel.

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

Try not to get slimed in Tribeca.

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

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

A crumbling hospital from the 1850s on Roosevelt Island.

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

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.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The highest point on the island known for buildings that touch the sky.

Con Edison’s exotic and heat-loving pests.

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

Hundreds of antique bank vault locks on display in New York City.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Enormous one time fiber mill now houses local artists and small businesses.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Once a dumping spot, now a park with a kayak launch.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.