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

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

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

This haunted corpse of a drive-in is now a graffiti-covered ruin.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

Two thirds of this Montreal neon icon has survived to flash another day.

Every year, the colorful murals of Montreal get a complete makeover.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Walled family complexes in Southern China.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

These two delightful animal-shaped buildings host a visitor center and wool shop.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

The real place where the One Ring to rule them all was forged.

This strange geological landscape erupts with sudden bursts of water.

The glacier tucked within a New Zealand rainforest.

A perfect turquoise lake colored with glacier dust.

Highly spherical boulders on the shores of New Zealand.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

One of the world's steepest streets seems to have houses sliding down it.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

This Japanese national treasure was originally built in 593.