Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

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

The largest mosque in Cambodia was built to unite the country's Muslim community but soon sparked division and controversy instead.

Khmer Rouge's high security prison.

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

One of the biggest markets in Asia, under one of the continent's largest domes.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

A quick and simple solution to Cambodia's train woes.

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

A small 12th-century temple surrounded by waters believed to have curative properties.

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.

A secluded, little-known temple hidden amid the dense jungle.

A battle between nature and architecture in the Cambodian jungle.

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

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

Under Hanoi’s medieval citadel sits a secret military headquarters from the final years of the Vietnam War.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Life-sized painted illusions let pedestrians blend in with the street art.

Unbeknownst to many, this fountain was erected as a tomb and still holds the remains of a Frenchman.

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

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