An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Climb to the top of the world's largest seated bronze Buddha.

Natural arch offers panoramic views of Yangshuo's karst hills.

This whimsically named Vietnamese stream is closer to a walkway than a waterway.

Khmer Rouge's high security prison.

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

A former French military respite turned jungle tourism hotspot.

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

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.

Giant relaxing Buddha in Malaysia.

The largest tea plantation in Southeast Asia supplies gorgeous vistas alongside tea for the surrounding countries.

Five miles of underground river link lake to ocean.

Malaysia's floating mosque.

A symbol of Islam in oil-rich Brunei.

Hindu temple of the dead home to hundreds of long-tailed macaques.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

Largest Kauri tree in New Zealand.

Handcrafted thermal spa washes away each night with the tide.

Deadly scalding and one of the largest hot springs in the world.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The once and future home of New Zealand's famed Pink and White Terraces.

Tubing through a cave lit with glowworms is a magical underground experience.