Sault Ste. Marie is a city in Ontario, Canada. It’s on the St. Marys River, north of the U.S. border, near 3 of the Great Lakes. It’s known for the 19th-century Sault Ste. Marie Canal, lined with red sandstone buildings. The Art Gallery of Algoma showcases works by local, national and international artists. The Canadian Bushplane Heritage Centre has a collection of aircraft and flight simulators.