Fort Lévis, a fortification on the St. Lawrence River, was built in 1759 by the French. They had decided that Fort de La Présentation was insufficient to defend the St. Lawrence against the British. Named for François Gaston de Lévis, Duc de Lévis, the fort was constructed on Isle Royale, three miles downstream from the other fort. Although some military people wanted a stone fort, it was built of wood, in a four bastioned, square configuration.