We are in the early stages of planning a 3+ week vacation to this area for late summer 2016. Our base will be Überlingen and we will have a car. We've long wanted to explore this lake area. We've had a month long home base in Freiburg (Breisgau) and Zug so we've spent some time in the southwest corner of Germany, especially the Black Forest area and the cantons across the Rhine in Switzerland. This time we are looking for recommendations around the lake and day trips into the adjacent countryside.
We know we want to visit Lindau, Konstanz and Mainau. We will be too late to experience an opera on the lake in Bregenz. We think we'd take day trips to Tübingen and Ulm. Do any of you have recommendations of things you've enjoyed in this region? Our customary interests are history, art and architecture, science, food and nature. We usually spend the majority of our time in cities so this will be a trip where we seek out charming towns, leisure walks, lake excursions and ? Really looking forward to this trip!