Peter would likely second your Yoga suggestion.
As for me, I'm going to add The House On The Rock, not far from Madison Wisconsin. Haven't been there in years. It seems they've added and Inn and Resort to the place. Can't speak for either of those, but the eclectic collection you will find in the original House, now referred to as The Attraction, is really worth seeing. Though I have to agree that it does have a bit of the feel of a horder, but what a wonderful collection of ordinary brik-a-brak to fantastic resides in this house. Has gotten a bit pricey, but what hasn't these days?
http://www.thehouseontherock.com/HOTR_AttractionMain.htm