An 1883 schoolhouse now home to collective of artists.

Spike Lee's provocative film is officially honored right where it was made, the first time a work of art was used as a secondary street name.

An arcade packed with a rotating collection of unique independent video games.

A massive art collective tries a new take on Brooklyn's DIY music scene—by making it fully legal.

There are owls with glowing eyes in Herald Square.

Wine bottle sculpture with a ship's stateroom inside.

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

This collection of grinning ephemera has grown from basement to Brooklyn.

An unassuming secret door once led to a legendary watering hole.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

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

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Check out the underground party scene at the "Burning Man of Brooklyn."

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

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

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

Built as a home for the Union Porcelain magnate in 1867, now the Greenpoint Reformed Church and home to a ceramic mystery.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Read a book next to a Midtown waterfall.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

A crumbling hospital from the 1850s on Roosevelt Island.