Secret North Korean passage discovered below the world's most dangerous border.

A collection of venomous snakes and reptiles for the whole family to enjoy.

A condom-covered Thai restaurant that is more concerned with birth control than food.

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

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

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

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

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

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

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

Three columns of volcanic rock shoot out of the ocean.

This tiny museum's sizable collection is jammed into a former underground public toilet.

The summer tourists on these cliffs are thousands of seabirds.

This fairytale-like structure is the last turf church ever constructed in Iceland.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

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

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

A replica of the decorated wooden pillars Viking sailors threw overboard when finding new places to establish a settlement.

The final resting place of the controversial chess champion.

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.