The Fremantle Volunteer Heritage Guides are a friendly group of volunteers that help man the Roundhouse, coduct public tours and school tours and other activities associated with it. They rely on donations to continue running so if you visit the Roundhouse please remember that: donations are greatly appreciated! The Roundhouse is the oldest public building in the State of Western Australia. Opened in January 1831, just 18 months after settlement, it was built to hold any person convicted of a crime in the settlement and was used until 1886. After it ceased being used as a gaol it became a Police Lock-up until the late 1890s and then was used as accommodation for the Water Police, and afterwards as a storage facility for Fremantle Ports. When threatened with demolition in the 1920s it was saved and later control went to the State Government before it was deeded to the City of Fremantle.