The Great Lakes are not only the most important natural resource in the world, but they also represent thousands of years of history. The lakes have dramatically impacted the social, economic and political history of the North American continent. The National Museum of the Great Lakes tells the awe-inspiring stories of our Great Lakes through breathtaking photography, over 300 incredible artifacts, a number of powerful audiovisual displays and 40 hands-on interactive exhibits including the 617-foot iron ore freighter Col. James M. Schoonmaker Museum Ship and the historic Museum Tug Ohio.