A nightmare for the claustrophobic lies hidden in Southeast Asia.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

Walk through a clothing store, across a courtyard, and up several flights of stairs for delicious coffee with a side of beautiful views.

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

This Vietnamese bar doubles as a multistory labyrinth.

An extravagant monument to an extravagantly unpopular Emperor.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

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

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

World's largest cave was only discovered in 1991, and now offers tours to the public.

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

A Guinness World Record-holding social enterprise whose shows don't shy away from heavy themes.

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

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

The river depicted in the antiwar film 'Apocalypse Now' was likely based on this Mekong tributary.

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.

Built by King Norodom to honor his late father.

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

Arguing within this idyllic, circular volcanic lake is forbidden.

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

An abandoned Cambodian resort that mirrored the downfall of the country as it was happening.

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

More than 100 Hindu temples are slowly being swallowed by the forest.

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