On June 26, 1959, President Dwight Eisenhower and Queen Elizabeth II dedicated the Saint Lawrence Seaway. The seaway is the world‘s longest inland waterway. Ships are able to travel the seaway from Duluth, Minnesota, to the Atlantic Ocean, which is a total distance of more than 2,000 miles. More than 50 million tons of cargo moves along the seaway each year. Ships carry steel, wood, coal and much more.