Bankstown Bunker
The Bankstown Bunker was a top secret Royal Australian Air Force base that was used during the Second World War. During the war it was Australia's main air defence base. It is no longer in use. The bunker is buried underneath a public park in the suburb of Condell Park in the City of Bankstown, which is in the state of New South Wales, Australia. It is still possible to go into the bunker through a secret passageway.