Locks · Écluses · Gabaakogan
This shipping canal was built to bypass the rapids on the St. Marys River. It was the longest lock in the world when it opened to commercial traffic in 1895, but was shortened to a third of its original length when it was converted to a recreational lock in 1998. Peek into the motorhouse to see the mighty gears that still operate the lower lock gates. You can also wander the trails on South St. Marys and Whitefish Islands to learn about natural ecosystems, local history, and early Indigenous life.