A toxic ghost town sitting atop a massive coal fire.

The world’s first penitentiary, meant to be humane, drove men insane.

This semi-hidden Manhattan restaurant is based out of a loading dock.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

A winding, cliffside stretch of road overlooking the Delaware River.

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

This Central New York ghost town was once a prosperous railroad community.

This once luxurious Catskills resort is now a haunting ruin.

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

A once grand hotel is being retaken by the wilderness it once capitalized on.

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

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

Adherence to strict Jewish laws is required to enter this ultra-conservative New York village.

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

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

The remains of what was once the world's steepest passenger funicular.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

This old cement mine has been used as everything from a mushroom farm to a recording studio.