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

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

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

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

Khmer Rouge's high security prison.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

Hoax, mistake, or evidence of dinosaurs in human times?

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

A battle between nature and architecture in the Cambodian jungle.

One of the world’s most colorful cemeteries, where each pigment is symbolic.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

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

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

This group of small islands on Lake Nicaragua formed after an eruption of the Mombacho volcano.

A Roman monument to their own civil engineering prowess.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A giant portrait of an ancient king looms over the river.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

According to this bar, God gave an “11th commandment” to Antwerp: Thou shalt drink beer.