Lake Superior islands include Madeline Island in the state of Wisconsin, Michipicoten Island in the province of Ontario, and Grand Island (the location of the Grand Island National Recreation Area) in the state of Michigan. The larger cities on Lake Superior include the twin ports of Duluth, Minnesota and Superior, Wisconsin; Thunder Bay, Ontario; Marquette, Michigan; and the twin cities of Sault Ste. Marie, Michigan, and Sault Ste. Marie, Ontario. Duluth-Superior, at the western end of Lake Superior, is the most inland point on the St. Lawrence Seaway and the most inland port in the world. Among the scenic places on the
Transportation in Minnesota rivers. Commercial water transportation now is limited to the shipment of bulk commodities on two routes. Barges haul grain and other products down the Mississippi River system from the ports of Minneapolis (the head of navigation), St. Paul, Red Wing and Winona on the Mississippi, and Savage (on the Minnesota River), to downstream river ports, and to ports on the Gulf of Mexico for transshipment to ocean-going cargo ships. Cargo vessels known as lakers haul grain, coal, and iron ore from the Lake Superior ports of Duluth, Superior, Two Harbors, and Silver Bay, through Lake Superior to the lower Great