The Fremantle Roundhouse is the oldest public building in the state of Western Australia. Opened in January 1831, it was built to hold any person convicted of a crime in the settlement until 1886. Since then it’s been a Police Lock up, accommodation for the Water Police, and a storage facility for the Fremantle Ports. Today it’s a popular historical tourist attraction, with sweeping views over the city, Fishing Boat Harbour and the Indian Ocean. The Fremantle Roundhouse is open between 10.30am and 3.30pm every day except Christmas Day and Good Friday. The ‘Fremantle Volunteer Heritage Guides’ office is also manned every week day between 10am and 3.30pm. The cannon is fired daily at 1pm. If you attend you may even be able to trigger the shot!