This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Come for the flowers, stay for the bats!

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

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

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

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

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

A clear example of the process of erosion in action.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

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