The gigantic preserved heart of a champion racehorse.

This giant dish located in a sheep paddock was the primary receiver of Apollo 11 TV transmissions.

The name for this waterfall was derived from the Aboriginal word used to describe a rainforest vine.

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

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

One of Australia's famed "Big Things," this giant fruit was once stolen as part of a publicity stunt.

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

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

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