The Légaré Mill, a National Historic Site, is the oldest working water-driven mill in Canada. This old community mill dating from 1762 sits in an enchanting site on the banks of the Chêne River, in the heart of Old Saint-Eustache. The miller still produces wheat and buckwheat flour using time-honoured methods. In the spring, he practises another old tradition, resurfacing the millstones. Visitors can watch him use a pick-hammer to restore the stones’ rough surface.