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
Great Lakes Storm of 1913 entire lake basin. The weather forecast of the "Port Huron Times-Herald" stated that southerly winds had remained "moderate to brisk". Northwesterly winds had reached gale strength on northern Lake Michigan and western Lake Superior, with winds of up to 60 mph (97 km/h) at Duluth, Minnesota. A false lull in the storm (a "sucker hole") allowed traffic to begin flowing again, both down the St. Marys River and up Lake Erie, and the Detroit and St. Clair rivers, into Lake Huron. Gale wind flags were raised at more than a hundred ports, but were ignored by many ship captains. Long