For centuries young Thai men used this Giant Swing as a slingshot to heaven.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

Three columns of volcanic rock shoot out of the ocean.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Rising from the sea like a stone monster.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The oldest stone house in Paris was built by its most famous alchemist.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

Modest by day, illuminated majestically at sunset.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Jesus' footprints and the first catacombs in the world.