A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A long abandoned hospital building on the outskirts of NYC.

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

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

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Connecticut's shot tower is near the end of its life.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

This Connecticut chapel is a starkly modern, and surprisingly colorful, architectural rebel.

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

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

This abandoned ironworks was once the most important military supplier in America.

An abandoned castle owned and ignored by Masons carries a cursed history.

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

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

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

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

This abandoned factory on the Hudson River once churned out a million bricks a week.

A crumbling hospital from the 1850s on Roosevelt Island.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Once America's longest-manned military fort, now an abandoned hulk.