It took years to decode its mysterious messages.

The site of Japan's first major environmental disaster.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

Abandoned silver mine strewn with wrecked and twisted structures.

This giant steer-skull edifice refuses to die.

A ghost town that held steady longer than most, but finally gave up the ghost.

The hellish conditions of this abandoned mine that snakes beneath the Pacific Ocean gave it its diabolic name.

Rusted structures stand like ghosts of Cyprus' 6,000-year-old copper industry.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

The frozen treats at this Cape Town parlor are inspired by Africa's food cultures.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

More gold than anywhere else, ever.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A perilous medieval road leading right into the sea.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.