Mount St John Anti-Aircraft Battery - Credit: Wikimedia Commons
Mount St John Anti-Aircraft Battery is a heritage-listed fortification at 43 Toll Street, Mount St John, City of Townsville, Queensland, Australia. It was built between February and April 1942. It is also known as Y Station, 16 Heavy Anti-Aircraft Battery and No. 2 Station, Gun Station 393. It was added to the Queensland Heritage Register on 26 November 1999. Read more on Wikipedia
Source: en.wikipedia.org