Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

This unique Renaissance castle was turned into a home for Nazi occultism.

Annual rush for a sacred desert lake's fish stock.

Muammar Gaddafi's well-intentioned investment in his favorite city turned out to be a nightmare.

These homes carved into the mountains seem to defy the laws of nature.

One of Western Africa's oldest mosques, this Timbuktu icon has stood for nearly 700 years.

Launch site for nuclear war against Western Europe.

A tiny traditional village keeps an ancient method of beekeeping alive.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

A massive wintry wall of snow up to 66 feet tall flanks a highway through Japan's mountains.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Left by the Devil, an ancient quarry or just plain old erosion, this enigmatic rock pillar rises 28 feet from the hillside.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

A bike train runs along a disused railway line through the tranquil French countryside.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.