This weekly market in the remote oasis city of Hotan still has the atmosphere of the old Silk Road.

Glacial lake that mysteriously empties itself every year.

This village was once a thriving Soviet uranium mining center, but is now semi-abandoned and desolate.

French scientists make up the majority of the few humans to occupy this remote island in the extreme southern Indian Ocean.

This uninhabited volcanic island is the most remote in the world.

Some of the world's only freshwater seals live in one very special lake in Russia.

Traces of the thriving lake trade that once linked the Soviet Union with Mongolia.

A "station to nowhere" marks the site of a Siberian subway project that never saw the light of day.

Most polluted lake in the world, used as a radioactive dumping ground for years.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

An abandoned guano-mining city in the South Pacific.

A remote coral island with a gristly history of shipwreck, battles, and a horrendous war crime.

This Arctic mining town is home to a cat that's spent years masquerading as a fox.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

Locals believe the purity of this huge, untouched Arctic lake could be the salvation of human civilization.

The most northerly active sand dunes in the world have some very rare botanical residents.

Two provinces and two territories touch borders deep in the middle of the wilderness.

You don't have to visit the deep blue sea to see these majestic creatures swimming wild and free.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

Stalin's secret bunker.

The oceanic dumping ground where spaceships go to die.

Why walk on this historical site when you can zoom down instead?