Modeled after the big, ferocious Hexham Grey mosquito.

A monument to the 4,114 Irish orphan girls who arrived in Australia between 1848 and 1850.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

For a century, the tallest building in Tasmania was a tower built to manufacture ammunition.

This copper-coated, multi-arched dome is surrounded by a moat and lights up at night.

Three-story concrete ram with a permanent gift shop.

An island off the coast of South Australia is home to the last purebred Ligurian bees.

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

It's beautiful, it's haunted and its claim to fame is that it's the oldest existing stone arch bridge in Australia.

Carved panels tell the complete history of the harsh Central Highlands region.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

An ancient engraving by the Cammeraygal people was uncovered in the transformation of a North Sydney industrial site.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

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

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

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.

One of Australia's largest secondhand bookstores.

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

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

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

This extraordinary geological oddity resembles human-made pavement.