I'd rather recommend stopping for a couple of hours in Bamberg, one of the very few cities in Germany that have not been smashed to bits in World War II and rebuilt post-war (which applies to Munich and Berlin and also Nürnberg). Bamberg has a well preserved, mostly baroque old town centre, the cathedral, the palace, the town hall on an island in the river... And try the local beer. More about the city:
http://www.bamberg.info/en/sehenswertes/