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

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

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

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

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

A clear example of the process of erosion in action.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A winding path built in secret on the edge of the continent.

Elevated freight railway turned wildly successful urban park.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The vast, legendary catacombs hold secrets much stranger than stacked bones.