A small museum in the Golden Triangle tells the story of the opium drug trade that gripped Northern Thailand.

Off-limits and full of venomous pit vipers, Brazil’s Snake Island has a frighteningly apt nickname.

Disused penal colony features prisoner artwork, some sketched in human blood.

A massive underwater sinkhole made famous by Jacques Cousteau.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

A flooded Mexican cave that hides a river beneath the water.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This former luxury resort in Kaua'i is now an abandoned relic.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

The world's largest aggregation of great white sharks is at a mysterious spot in the middle of the ocean.

Microscopic fossils suggest Australia may be the birthplace of sulphur-based life forms.

This Australian beach is composed of tiny shells.

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

Stay in your own little bubble.

A walkable map of the world, made from soil and stone by one man.