A nightmare for the claustrophobic lies hidden in Southeast Asia.

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.

A battle between nature and architecture in the Cambodian jungle.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

This Himalayan airport provides one of the most difficult landings in the world.

Clusters of huge boulders in the Australian Outback.

The UFO capital of Australia is the outback’s answer to Roswell.

Come for the flowers, stay for the bats!

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

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

This strange geological landscape erupts with sudden bursts of water.

A glacier pocked with ice caves and surrounded by rainforests.

A perfect turquoise lake colored with glacier dust.

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

The most visited, and possibly most controversial, museum in Germany.

A little sculpture with a large wardrobe.

Mysterious 500-year-old tapestries depict a unicorn hunt.

One of only two commuter aerial tramways in the United States.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Elevated freight railway turned wildly successful urban park.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.