The Old Windmill is located in Wickham Park, on Wickham Terrace in Spring Hill, Brisbane, Queensland, Australia. According to the heritage notice (shown at left), it is the oldest surviving building in Queensland.
The Old Windmill was built in 1824 during colonial times by convicts for grinding grains, such as wheat and maize. The Old Windmill originally had wind-powered sails. The grinding of the grains was done by treadmill from October, 1828, with the wind-powered sails being used from December, 1828.
After the murder of two members of a surveying party near Mount Lindesay in May 1840, three Aboriginal men were apprehended and tried for the crimes. In July 1841, the two surviving Aborigines were hanged from a beam from an upper window of the windmill.