The largest piece of no man's land left on Earth.

These giant volcano sponges in Antarctica are thought to be the world's oldest living animal, at 15,000 years old.

A vertical tube that allows you to see what's going on underneath the Antarctic sea ice.

Nimrod Polar Expedition base, and home to hundred-year-old frozen whisky.

Southern Ocean waters and glacial forces transform the Antarctic ice into these stunning bridges and caves.

Fire meets ice at the southernmost volcano on Earth.

Natural time capsule containing an alien ecosystem.

One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.

An ice field known for harboring an infamous Martian meteorite turned out to contain the oldest air on Earth.

The bodies of some early polar pioneers are still buried beneath the harsh snows of the Antarctic.

Largest sub-glacial lake ever discovered.

Considered the most remote point in the entire world.

A centuries-old quest to create artificial life is alive and well in the French town of Limoux.

These thermal springs were once popular with residents of a nearby Roman colony.

The site of the first medieval crusade that pitted Christians against Christians.

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

The most powerful waterfall in all of Europe.

A geothermal pool in North Iceland that is said to be the bathing spot of the legendary Grettir the Strong.

Rising from the sea like a stone monster.

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

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

Pick up this rock and become an instant legend.