The two must see places I would suggest if you visited would be Wisconsin Dells and House on the rock. I've never been to House on the Rock but I have been to Wisconsin Dells and it was the most fun I ever had. The House on the Rock is a huge building, actually multiple buildings that were built on a rock. It has the largest in door carousel ever. Below is a picture of the Trojan horse go kart track at mount Olympus theme park in Wisconsin Dells. There is also a picture of the infinity room at the House on the Rock.