As the Dead Sea continues to deplete, massive sinkholes open along its banks.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

A swing to dangle you off the very edge.

A dangling church built over a Colombian gorge.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

Twisted buildings adorn the banks of the Rhine river.

A beautiful maze marks where three countries meet.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

A fiery crater has been burning in the Karakum Desert since 1971.

World's oldest and largest space launch facility, once a secret missile testing site.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The hottest place on the planet.

An underground city of salt.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

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

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

The world's most active stratovolcano is almost always erupting.