A series of gun powder chambers currently hidden from view within Nobbys Headland in Newcastle, Australia.

A beautiful hike through national parks, forests and beaches in Western Australia.

Australia's first opal field led to a mining rush in the 1890s.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

A granite waterfall cascading down is one of the highest multi-tiered falls in the state.

A historic hotel on the edge of the Australian outback.

The Australian lorikeets that like to tie one on in an annual drinking binge.

This odd 1930s shop remains stranded in time and shrouded in mystery.

Granite rocks that concentrate waves into powerful jets.

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

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

These Australian rock formations look like Martian beehives that have grown up out of the landscape.

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

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

This Australian beach is composed of tiny shells.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

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

This massive water spout has been luring visitors for hundreds of years, some to their death.

Clusters of huge boulders in the Australian Outback.

Rainforest filled with record-holding eucalyptus.

Aqua white sand highlighted with fiery red rocks.

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

Microscopic fossils suggest Australia may be the birthplace of sulphur-based life forms.