A sparkling sandstone cliffside that's worth a visit while it still exists.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

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

Outdoor art exhibition made of classic Tetris pieces.

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

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

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

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

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

By standing on a particular paving stone in the courtyard, you'll hear an echo that shouldn't be.

Once the path of a railway tunnel, now home to thousands of glowing insects.

This rickety old shed hides a trove of secondhand literary treasures.

This abandoned railroad tunnel is now home to a micro-colony of bats and a ghost train.

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