Plaque de Pierre de Rigaud
A federal historic plaque explaining the origin of the city's name, honouring the last French governor of New France.
Avenue Saint-Charles (Route 340), near rue Saint-Michel, Vaudreuil-Dorion, QC

Photo: Pierre5018, CC BY-SA 4.0
History
Erected by the Historic Sites and Monuments Board of Canada (an earlier version dates to 1951), this plaque commemorates Pierre de Rigaud de Vaudreuil (1698-1778) - born in Quebec, named Governor of Louisiana in 1742, and in 1755 the first Canadian-born Governor of New France. As the plaque itself records, he capitulated at Montreal in September 1760, was later charged with maladministration and briefly imprisoned in the Bastille, was ultimately acquitted, and died at the Château de Muides in France.
Why visit
It's the direct explanation for the city's own name: Vaudreuil (and, by extension, Vaudreuil-Dorion) is named for this seigneurial family - the 1702 Vaudreuil seigneury was granted to Pierre de Rigaud's father, Philippe de Rigaud de Vaudreuil.