Duluth, Minnesota Lakes Waterway and the Saint Lawrence Seaway. Duluth forms a metropolitan area with neighboring Superior, Wisconsin, called the Twin Ports. The cities share the Duluth–Superior harbor and together are the Great Lakes' largest port, transporting coal, iron ore (taconite), and grain. A tourist destination for the Midwest, Duluth features the United States' only all-freshwater aquarium, the Great Lakes Aquarium; the Aerial Lift Bridge, which spans the Duluth Ship Canal into the Duluth–Superior Harbor; and Minnesota Point (known locally as Park Point), the world's longest freshwater baymouth bar, spanning . The city is also the starting point for vehicle trips along
North Shore (Lake Superior) which are not even particularly close to it. The majority of Ontario Provincial Parks are undeveloped nature reserves with no formal campgrounds or visitor centers. North Shore (Lake Superior) The North Shore of Lake Superior runs from Duluth, Minnesota, United States, at the southwestern end of the lake, to Thunder Bay and Nipigon, Ontario, Canada, in the north to Sault Ste. Marie, Ontario, in the east. The shore is characterized by alternating rocky cliffs and cobblestone beaches, with forested hills and ridges through which scenic rivers and waterfalls descend as they flow to Lake Superior. Lake Superior was settled by