I second Lee's recommendation for Oberstdorf. It has somehow remained off the radar for international travelers, but it is a very popular Alpine resort for Germans, particular for the SW part of the country. The town itself is very attractive, offers plenty of good restaurants and chalet hotels and the surrounding scenery is stunning.
For WWII history (which often on this website means 1933-1945), realize that the most lasting legacy of the war isn't what's there, but rather what's missing. With a few exceptions, don't expect to see much in the way of historical preservation. Other than the sites already mentioned, I can recommend the Heidelberger Thingstätte. This was built by the NS government as an outdoor amphitheater for holding party rallies. It didn't see much use, but it was never damaged, and other than the removal of all Nazi-related insignia, it remains completely intact. Another completely undamaged relic, and one that's still used for it's original puprose, is the Olympic Stadium in Garmisch-Partenkirchen.
Enjoy because Nürnberg is a great place to visit even outside the prospective of WWII. Nürnberg seems very keen to emphasize it's medieval and Renaissance history, particularly as the home of Albrecht Dürer... but unfortunately, the city's fleeting association with the yearly Party Rallies seems to be the big modern tourist draw.