Not a single witness can attest to the creation of the world's largest geoglyph.

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

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

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

This shrine to film's most iconic wasteland wanderer is located in the very outback where the movies were shot.

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

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

Australia's largest medical museum featuring a 19th-century pharmacy.

This letter written by Queen Elizabeth II in 1986 won't be opened until 2085.

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

Popular tourist destination now stands as a memorial to Sam the koala.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

Bomb tests and sheep ranchers share the world's largest military land base.