You could suggest a few places to your parents. I would recommend they visit the Iowa Great Lakes Maritime Museum. Lakes Art Centre, Nutty Bar StandThe Ranch Amusement Park are also considered top attractions in the area. If they like Golf the Brooks Golf Club is just one of many courses which would be ideal for them. Being on the lake there are various watersports available and Boat rentals are also on offer.
For more general information see the
Iowa pages.