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
Canal Park, Duluth lighthouse pier, the Lake Superior Maritime Visitor Center, the Great Lakes Aquarium, and the William A. Irvin floating ship museum. Those interested in boats will also enjoy watching vessels from around the world enter Duluth's port. Until January 2017, Canal Park was the home of broadcast studios for four Red Rock Radio stations. The Duluth NBC affiliate KBJR is still located in Canal Park. Canal Park, Duluth Canal Park is a tourist and recreation-oriented district of Duluth, Minnesota, United States. Situated across the Interstate 35 freeway from Downtown Duluth, it is connected by the famous Aerial Lift Bridge to the