The Moulin seigneurial de Tonnancour is an 18th-century mill complex in Pointe-du-Lac, west of central Trois-Rivières. Its flour mill and sawmill were powered by water, and the restored mechanisms still show how rural industry worked under the old seigneurial system.
The miller's house now hosts art exhibitions, so a visit combines local history with a small gallery stop. It is most useful for travellers with a car who want a quieter historic site beyond the old town and the Saint-Maurice ironworks.