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

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.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

A sulfuric martian landscape that looks far better than it smells.

A fantastic reconstruction of a 10th-century Viking longhouse.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

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.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A quick and simple solution to Cambodia's train woes.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

A battle between nature and architecture in the Cambodian jungle.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Khmer Rouge's high security prison.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This beautifully deceptive waterfall is something far different from what it appears to be.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

The stoutest tree in the world.