We left South Dakota and entered Minnesota, then La Crosse Wisconsin where we rode in a paddle boat on the Mississippi River! I’ve never even heard of a swing bridge for trains but got to see one working up close. Then we visited a lot of little towns and were amazed at the size of Minneapolis St. Paul.
Afterward, we moved north to Duluth MN and Superior WI where we enjoyed Lake Superior, what the locals call their “natural air conditioner”.