The old windmill, the oldest building in Queensland, located in Wickham Park in Brisbane. The mill was built exiled convicts in 1824 for the grinding of grain – wheat and corn. In December 1828 she had wings wind power. After the murder of two members of the geological party near mount Lindsay in may 1840, three local aboriginal people were accused of this crime. In July 1841, two of them were hanged on the bar top window of the mill.

In January 1862, the Old windmill was the first home to the Queensland Museum. Later it was used as a signal tower, and today it serves as station weather observations.

In the late 19th century mill building, it was "concluded" in cement plaster to protect the brick and stone walls from heavy rains. The current plaster was applied over the building in 1988, it simulates the stone blocks that built the mill.

From 1922 to 1926, the mill was a meeting place for members of the Institute of radio engineers, here they conducted their experiments, in particular tested the transmission medium wave band AM radio. The building was ideally suited for these purposes since it opened panoramic view from Moreton Bay in the East to the rolling hills of the darling downs to the West. Near the windmill was installed 45 metre mast and 24-meter antenna between a mill and a tower in those days it was the most impressive building in Queensland. In the 1930's and 40's, the building was used for the broadcast of the first television programs.