One of the largest ancient geoglyphs in the world is a tall desert god used for predicting the weather.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The largest stone moai on Rapa Nui.

The haunting peak of an old church is all that remains of a drowned Brazilian city.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

Thousands of fossilized footprints speckle this Bolivian national park.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Bolivia's needle-like rock formations.

This cubist Vienna church building looks like some sort of alien stonehenge.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

These naturally occurring but rare geological formations are each about the size of a small house.

A spectacular impact crater in the rugged heart of Central Australia.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

A massive concentration of algae is responsible for this lake's pink hue.

A beautiful 1920s tower filled with local hidden gems.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

The red crab exhibits one of the most spectacular migrations on earth, despite manmade obstacles.

You'll find the little birds tucked within the rocks of this Australian beach.

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.

An incredible garden taking over the interior of a massive sinkhole.

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

Rainforest filled with record-holding eucalyptus.