The 81-hectare (200-acre) Fort Lennox National Historic Site (Lieu historique national du Fort-Lennox) is accessible via St-Paul-de-l'Île-aux-Noix, about 19 km (12 mi.) s. of St-Jean-sur-Richelieu at 1 61st Avenue via Hwy. QC-221. The well-preserved buildings of Fort Lennox, one of the largest forts built in Canada, sit at the south end of Île aux Noix on the Richelieu River. The island is reached by ferry, which departs from the visitor center on the mainland every 30 minutes on the quarter-hour. Learn More...