Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

This red lake 4,000 meters above sea level is home to rare flamingos.

A volcanic landmark located on an Ice age lake bed.

A centuries-old fortress city lies in ruin.

Rock-cut cave complex filled with ancient Buddhist artwork.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

Ancient rock-hewn town that witnessed key events of Georgian history.

Extremely isolated Silk Road caravanserai in the middle of nowhere.

Lonely minaret stump of a destroyed city.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.