Lucky you, it was basically the only site i wasn't able to see when i did my USA honeymoon. But i still have hope for a second trip.
Eh, i went to Minnesota via plane and then i stayed for a little while in Wisconsin (staying as guests of my wife's cousins), including a cruise on mississippi and a visit to the House on The Rock. Then we traveled by car through Illinois, Indiana, Ohio and Pennsylvania (where i visited Gettysburg). Then plane again to Nevada (flying over the painted desert), staying in Las Vegan and doing a trip to the Grand Canyon. Back to Wisconsin and Back to Europe.