Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

This massive water spout has been luring visitors for hundreds of years, some to their death.

These Australian rock formations look like Martian beehives that have grown up out of the landscape.

Clusters of huge boulders in the Australian Outback.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

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

A clear example of the process of erosion in action.

A stray meteor left this picturesque hole in the Australian outback.

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

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

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

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Traditional 11th-century outdoor tannery.

This "floating island" plateau sits 7,671 feet above the forest floor.

Curious carved stones and bird-like wings are a symbol of Serbian resilience and freedom on the site of a WWII massacre.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

A grand Yugoslav memorial to the group of partisans who fought and died resisting western Serbia’s Nazi occupation.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

Structure built from the skulls of vanquished foes.

Space-age monument to an early 20th-century uprising.