The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

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

A burial ground of rusting metal grave markers.

19th century cemetery hidden in Brooklyn's Prospect Park.

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

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.