Highly recommend driving out to Spring Green and visiting The House on the Rock, 38 miles on US Hwy 14 West. Wife and I did that when the Grandson was at Beloit College.Looking around.....not a lot to do in Wisconsin in September....
Maybe a fly in...stay a day and fly home...
House on the Rock - Wisconsin Attraction | Resort | Golf
The House on the Rock is a world famous Wisconsin Attraction opened in 1960 by Alex Jordan. It now also features a world class resort, golf course, and spa!
www.thehouseontherock.com