Ruins of a historic medical facility sits eerily by the water.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Original factory of John G. Borden who started what we know today known as Borden Dairy.

The largest known open fault in the United States is basically a giant natural refrigerator.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

A former copper mine which became a truly unsuccessful prison.

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

A distillery built on (and above!) mobster Dutch Schultz's Prohibition-era underground moonshine business.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

An abandoned Depression-era zoo hidden just off the highway.

This enormous abandoned factory is now a makeshift graffiti gallery.

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

A once-booming railroad left abandoned next to the Quinnipiac River marshes now intersects with a hiking trail.

This historic park site contains the last remnants of a once bustling canal system.

Hidden behind a Target are pillows of cooled lava that formed at the bottom of a deep lake in the Mesozoic Era.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.