A Bed-Stuy gymnasium that hosts expansive raves, performances, dance parties, and more.

An illegally built ramshackle mansion tucked in the middle of Brooklyn is now being turned into condominiums.

Down a stairway in the East Village, you could once read a plaque describing an alternate history of a fictional version of Manhattan.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A riverfront park that both remediated and preserved its industrial past.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

Queen Anne style apartment house built in 1886.

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

Here be dragons.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

This abandoned artificial island off the coast of New York City is now home to dozens of harbor seals.

For 20 years, local pumpkins have met their fate on the iron fence surrounding this Cobble Hill home.

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

Lehigh Valley barge No. 79 still gets tugged along - but now it houses a museum and unusual performances.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

You must take the A train... to the last active cemetery in Manhattan.

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

A ruthless Soviet relocation campaign birthed a new cuisine, and this humble restaurant.

A Collegiate Gothic quadrangle that surrounds an 18th century secondary school whose financing came from the likes of Alexander Hamilton and Aaron Burr, among others.

The competition: breathe deeply as long as you can.

The legendary court where emerging basketball players gain their street cred.

This block in downtown Brooklyn was a hotbed of antislavery activism along the Underground Railroad.