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 Stele Arts Board. The program funds the acquisition of art to be displayed in state buildings that are accessible to the public. Lake Superior Stele Lake Superior Stele is a relief sculpture created by Wenzhi Zhang, a notable Chinese artist and educator. Consisting of 120 individual stoneware tiles attached to a steel framework, Lake Superior Stele spans two stories of the Academic and Student Services Building on the campus of Lake Superior College in Duluth, Minnesota. The piece was officially unveiled in March 2008. The mural combines representations of the region's iconic architecture, culture, industrial heritage and landscapes into an intricately