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
Lake Superior Railroad Museum Lake Superior Railroad Museum The Lake Superior Railroad Museum is a railroad museum in Duluth, Minnesota, United States. The museum has seven steam, 14 diesel, and two electric locomotives; and more than 40 other pieces of rolling stock. The collection includes the "William Crooks", which became the first locomotive to operate in the state of Minnesota in 1861, and Duluth, Missabe and Iron Range Railway Number 227, a 2-8-8-4 "Yellowstone" locomotive that was among the largest steam engines to operate. The museum operates a heritage railroad called the North Shore Scenic Railroad. The museum is housed in the former Duluth