An abandoned railroad tunnel is now filled with bioluminescent bugs.

One of Australia's largest secondhand bookstores.

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

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

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

Come for the flowers, stay for the bats!

Australian museum dedicated to human health and lack thereof.

This grim museum collects artifacts and evidence of some of the most sensational antipodean crimes.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Metro station with a claim to rock n' roll fame.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

Puppet theater and museum holding a collection of more than 300.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Where once there was a train station bathroom, there is now this German burger joint.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

A museum dedicated to a Cold War era sausage.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This classic restaurant features a gorgeous mirror-clad room.

A slice of central Asia in the middle of Berlin.

Art and a pun, all in one.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.