Khmer Rouge's high security prison.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

The world's first military tank was designed in this English city amid the stalemate of WWI trench warfare.

Inside this chapel, Victorian jailers took the separate system to new levels.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

The charming collection illustrates life in Lincolnshire in the 18th through 20th centuries.

Modern commuters still pass through this 2,000-year-old Roman archway.

The oldest of the three remaining bridges in England with buildings on top of them.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

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

A battle between nature and architecture in the Cambodian jungle.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A non-profit that uses the impressive smelling abilities of African Pouched Rats to find and clear unexploded land mines.