Nice photos....Wisconsin offers some very scenic parks, and views.
There's always The Green Bay Packer Hall of Fame, and the historic Lambeau Field.
The Green Bay Area also offers The National Railroad Museum.
Road trip mean sampling the local cuisine. In Wisconsin, Cheese factories are nearly as prevalent as taverns.
http://www.lambeaufield.com/
http://www.wisconline.com/attractions/cheese.html
The directory here on theBubbler should be a good resource in planning a thoroughly enlightening and entertaining road trip.
Keep it between the lines, and don't drink and drive.
Enjoy
