Oliver Hill Battery

Oliver Hill Battery is a preserved World War II coastal defence installation on Rottnest Island, Western Australia, about 19 kilometres off the coast of Fremantle. Constructed between 1936 and 1938 to protect Fremantle Port, it features two 9.2-inch naval guns, underground tunnels, magazines and observation posts. Now a heritage attraction managed by the Rottnest Island Authority, it is accessible via guided tours and the Oliver Hill Railway.

Visitors can explore a restored coastal artillery battery set on the highest point of Rottnest Island. Expect large 9.2-inch gun emplacements, an extensive network of underground tunnels, magazines and engine rooms, and observation posts with panoramic views over the island and Indian Ocean. Access is by guided tour only, often including a ride on the heritage Oliver Hill Railway from the Settlement. Displays explain the battery's construction, operation and role in Fremantle's coastal defences.