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

A limestone wonderland of water and subterranean secrets.

Khmer Rouge's high security prison.

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

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

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

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

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

A battle between nature and architecture in the Cambodian jungle.

The beautiful 16th-century stepwell lies in the shadow of a famous fortress.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

The world's second-largest sundial, made entirely out of stone.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

Singapore's oldest Hindu temple.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Singapore's landscaping project is home to 18 incredible Supertrees.

As the aging humans of this Japanese village die off one local artisan is replacing them with eerie homonculi.

One of the word's deepest gorges is also tied to a fantastic legend.

Natives of this mud-brick desert village use an ancient irrigation system to grow sweet, seedless grapes.

The western-most fortress on the Great Wall of China has gone from a strategic stronghold to a kitschy tourist carnival.

The ancient remains of this natural fortress can still be found along the Silk Road looking surprisingly preserved.

This ratty natural history collection is a charming relic among a city rushing into modernity.

This massive neon wheel is the only one of its kind to be built over a bridge.