The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Scholar, adventurer, saint, and instigator of the Goa Inquisition.

This peaceful, round shrine in the middle of the Sri Lankan jungle acts as a beacon of peace.

This elaborate temple was built around one of the Buddha's teeth.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The abandoned site of the Beatles spiritual awakening and subsequent revolt.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

Sacred Buddhist home of some spiritual monkeys.

An ancient iron pillar in Delhi that seems to be rustproof.

This experimental utopian "city of the future" in rural India may hold a dark secret.

The remains of what was, not so long ago, the world's largest city.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Massive volcano in the Andes is the farthest point from earth's center.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Khmer Rouge's high security prison.

A battle between nature and architecture in the Cambodian jungle.

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

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

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

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

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.