Going from Chicago north, Highway 41 gets more interesting. It heads up through the more Ghetto areas of Milwaukee, then cuts into eastern Wisconsin, around Lake Winnebago, through Fond Du Lac, Oshkosh, Appleton and the Fox Cities, Wrightstown, West De Pere, and Green Bay. The Lombardi Drive exit will take you straight to Lambeau Field (home of the Green Bay Packers). Still further north, 41 skrits up the Green Bay coast and into the Upper Penninsula of Michigan. I think it goes up to Michigan Tech in Houghton, but I'm not really sure about that.