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
Minnesota Point Minnesota Point Minnesota Point, also known as the Park Point neighborhood of Duluth, Minnesota, United States; is a long, narrow sand spit that extends out from the Canal Park tourist recreation-oriented district of the city of Duluth. The Point separates Lake Superior from Superior Bay and the Duluth Harbor Basin. Lake Avenue South / Minnesota Avenue serves as a main route in the community. Near the end of Minnesota Point is a small airport, Sky Harbor Airport. Beyond the airport, approximately 3/4 mile, is an old growth red and white pine forest. Within the forest is a Minnesota Department of