Part of one of the largest flooded cavities on the planet, and littered with prehistoric animal bones.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

A remarkable geological formation resembling a forest made of stone.

Hub for hallucinogenic Amazon religion.

A market for witches is hidden within a train station.

Enormous array of antennae fill a desert valley.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

Sleep in a glass pod dangling off a cliff.

In this mine all the gold you can carry may not be as sweet of a deal as it sounds.

Astronomical observatory above Lake Titicaca.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

Bolivia's needle-like rock formations.

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

A seemingly endless landscape of pure salt stretches far across Bolivia.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

A 300-foot-long Cold War submarine floats in a Chilean River as a maritime museum.