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
Duluth, Minnesota race runs the length of Lake Superior, from Sault Ste. Marie to Duluth. When the season is right, Duluth offers waves "that can compare to some of the best surfing in Hawaii or California". In Duluth the right season for surfing is winter, especially during one of Lake Superior's infamous gales of November. Wearing a thick neoprene wetsuit, or perhaps two, surfers gather at Stoney Point, a rocky bay about 15 miles north of Duluth, where waves as high as 15 feet can be expected. In a 2013 broadcast, Minnesota Public Radio featured a segment on Duluth/Lake Superior surfing, and