World's first "penitentiary," meant to be humane, drove men insane.

A layered tribute to the work of mosaicist Isaiah Zagar.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

There must be a pun in this haystack somewhere...

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

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

A modern addition to the Greenpoint skyline.

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

A yoga studio and venue for "chill-out parties" in a former chicken slaughterhouse.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

This Queens beer hall preserves a German culture and language that is all but lost.

Why have you never heard of the second most popular tourist site in New York?

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

This roadside dinosaur park offered up lumpy neon thunder lizards in the name of kitsch and education.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

A reversed traffic signal that was once violently misinterpreted as a statement on British-Irish relations.

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

The largest known Ancient Egyptian obelisk.