The Old Mill, Historic windmill in South Perth, Australia

The Old Mill is a round stone tower on Mill Point, on the southern bank of the Swan River in South Perth, Western Australia. The tower still stands largely in its original form and now houses an education centre open to groups and school visits.

William Kernot Shenton commissioned the mill, and Governor James Stirling laid its foundation stone in 1835. Built by Paul and James Lockyer and operated by William Steele, it was the colony's first wind-powered industry, milling up to 680 kilograms of flour a day until 1859, when unprofitability and the unsuitable location ended operation. In 1880 engineer "Satan" Browne turned it into a dance hall and hotel called Alta Gardens; the venture failed and the building later served as a chicken run and house. In 1957 the Narrows Bridge route was deviated to save the site, and a folk museum was established.

The name Mill Point comes from this mill, which stood near the colony's earliest housing and farmland. In 1880 an engineer nicknamed "Satan" Browne turned the building into a dance hall and hotel called Alta Gardens; the venture failed, and the mill later served as a chicken run and a house. The 4.1-tonne cogwheels were hewn from a nearby tuart tree (Eucalyptus gomphocephala).

The tower sits right on the waterfront at Mill Point and is easy to reach on foot or by ferry from central Perth. A visit pairs well with a walk along the Swan River, as the surrounding area is flat and straightforward to navigate.

When the Narrows Bridge was built in the 1950s, engineers adjusted its route to avoid knocking down the tower. This decision was made before the site had any formal heritage protection, showing how early it had earned a place in the city's memory.