Great Lakes Aquarium, a 60,000-plus square-foot facility, located on the shore of Lake Superior, in Duluth, Minnesota, is the nation's only freshwater aquarium. Home to some 70 species of fish and to 30 other animal species, Great Lakes Aquarium offers a fascinating glimpse at what life is like below the water's surface. In addition, the aquarium offers interactive exhibits that allow kids of all ages to learn more about the region's cultural and geological history.