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

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

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

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

An extravagant monument to an extravagantly unpopular Emperor.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

Vietnam's largest Buddha statue depicts a female sage.

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

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

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Khmer Rouge's high security prison.

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

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

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.

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

Buried in the Laos jungle is a sanctuary for bears that would have otherwise been milked to death by poachers.

This Bangkok high-rise looks like a rudimentary LEGO elephant.

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

A tall karst islet popularized by 007.

The lavish, well-preserved home of a wealthy Baba Nyonya family is now a cultural museum.

Malaysia's floating mosque.

1800 rooms of single-family residence in Brunei.

A remote lodge nestled among some of the world's best-preserved rainforests.