Lachine Canal National Historic Site

The Lachine Canal National Historic Site runs through the Sud-Ouest of Montreal, Quebec, from the Old Port to Lachine on Lake Saint-Louis, and the Marché Atwater at 138 Avenue Atwater is a common starting point. The canal was opened in 1825 to let vessels bypass the Lachine Rapids, which blocked navigation upstream from Montreal, and it was enlarged in the 1840s and again in the 1870s to take bigger ships. Its water power and transport links made it the cradle of Canadian industrialisation: factories for textiles, metal goods, and food processing lined the banks, and workers' neighbourhoods such as Griffintown, Saint-Henri, and Pointe-Saint-Charles grew alongside. The opening of the St. Lawrence Seaway in 1959 made the canal obsolete, and it closed to shipping in 1970, after which many factories shut down. Parks Canada took over management, and the canal reopened for pleasure boating in 2002 after a major rehabilitation, with the banks turned into a linear park. Today's visible remains include a series of locks, swing bridges, grain elevators, and brick industrial buildings, some now converted to housing and offices. The interpretive approach is open-air and thematic: panels along the path explain the locks, the workers, and the industrial history. A paved path alongside the water is used by cyclists, walkers, and runners, and boats pass through the locks during the navigation season, which runs roughly from mid-May to mid-October. The area was long polluted, and the clean-up and landscaping have changed the corridor's current state. Walking or cycling the full length takes a few hours, while shorter stretches can be covered in an hour.