Highly spherical boulders on the shores of New Zealand.

A glacier pocked with ice caves and surrounded by rainforests.

White cockroaches and other cave species occupy this massive series of lava tubes.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

Clusters of huge boulders in the Australian Outback.

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

An Australian lake whose pink hue defies scientific explanation.

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

A wonder of natural limestone formations etched by millions of years of natural interaction between rainfall and rock and air.

Curious crater remnants in the middle of the Australian outback.

These tracks are believed to be from a panicked dinosaur stampede.

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 dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

A historic hotel on the edge of the Australian outback.

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

A huge stone pyramid built for fun.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

6000-year-old coal fire moves one meter per year.

When you get to Magnetic Hill park near the sign, put your vehicle in neutral gear, and watch it roll uphill...

Once the path of a railway tunnel, now home to thousands of glowing insects.

Come for the flowers, stay for the bats!

This historic observatory contains the world's oldest refracting lens telescope.

Outdoor art exhibition made of classic Tetris pieces.