Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

The lasting remains of the region's once booming cement industry.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

An arcade packed with a rotating collection of unique independent video games.

A Prada store in the West Texas desert that is never open for business.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

The largest drain hole in the world.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

This black church sits alone among a field of lava rock.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

A park full of outsider art, created by college students studying outsider art.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

A beautiful oddities shop crammed with strange and morbid curiosities.

The longest navigable underground river in the United States is home to countless blind and albino animals.

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

Ride the subways of yesteryear.

A trash dump made beautiful by nature's power.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.