Challenger Battery

Challenger Battery is an artillery site on Garden Island featuring a central ammunition bunker with brick walls and concrete floors. Two gun positions were situated at Entrance Point to command views over the coastal waters.

The battery was built during World War II as the first gun position constructed on the island. It was equipped with American-supplied 155-millimeter cannons to protect the surrounding waters and strategic passages.

The site reflects how Western Australia organized its coastal defense and the role of international military cooperation during wartime. You can see how the defensive infrastructure was built into the local landscape.

The site can be accessed through the Australian Heritage Database, where information panels explain the construction methods. Check ahead about current access conditions for Garden Island, as some military areas may have restrictions.

The position was one of the earliest defensive structures built specifically during wartime operations on the island. This rapid response to military threats shows how urgent coastal security was for the region.

Location: Western Australia

Location: City of Rockingham

Part of: Fremantle Fortress

GPS coordinates: -32.15870,115.66470

Latest update: December 14, 2025 14:21