Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

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

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

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

The only pollutant in the clear blue water is sunscreen.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

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

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

Khmer Rouge's high security prison.

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

A battle between nature and architecture in the Cambodian jungle.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

A natural arch offers panoramic views of Yangshuo's karst hills.

Why walk on this historical site when you can zoom down instead?

The latest in a series of long glass bridges suspended at terrifying heights.

270 million year-old forest of stone.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”