Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

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

Oldest existing wire suspension bridge in the United States.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

The 10,000 Torii shrine.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A field of nothing but boulders which resembles a giant's gravel driveway.

This Parisian café sticks almost exclusively to an ethos of reuse.

An experimental, automotive replica of Stonehenge.

A museum dedicated to exhibiting remarkable outsider art.

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

100 massive sculptures in the Hudson River Valley.

The oldest continuously inhabited street in America.

The lost town of Neversink, sunk by New York City.

This once luxurious Catskills resort is now a haunting ruin.

A fictional town that was briefly brought to life before fading once again out of existence.

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

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

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

This Japanese-inspired labyrinth of hot springs is hidden in a Chilean forest.