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.

Come for the flowers, stay for the bats!

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A clear example of the process of erosion in action.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Many rock climbers have come to conquer this slender sea stack, with various degrees of success.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

One of the best beaches in the entire world.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

Clusters of huge boulders in the Australian Outback.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Alien rock formations grown from the sands of an Australian national park.

Incredible rock formations jut from the southern end of this spectacular stingray-viewing spot.

This replica medieval European village in the Dominican Republic was built by a Hollywood set designer.

A small, but award-winning beach known for its literally spotless reputation.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

A giant hilltop cross marks the location of a sanctuary with stunning views of Acapulco.

This striking, two-toned confluence of rivers is visible from space.