A thematic undercurrent in Germany is the violence of war, and the Holocaust against not only Jews, but other minorities, conditions; a study in means of persuasion to convince people it is justified, and then the fairy tales and castles, with their lessons of rewards for ingenuity, time lapses for justice to be done.
2006: Frankfurt, Marburg, Fritzlar, Kassel, Wartburg, Weimar and Buchenwald, Wittenberg, Potsdam, Berlin, Dresden, Chemnitz, Bamburg, Nurnberg, Regensburg, Altotting, Berchtesgaden, Munich, Oberammergau, Garmisch, Neuschwanstein, Hohenschwangau, Schongau, Wies-Kirche, Augsburg, Dinkelsbuhl, Rothenburg, Wurzburg, Schwabisch Hall, Heidelberg, Speyer, Trier, Aaachen, Koln, Burg Eltz, Koblenz, Rhine castles, Mainz and Frankfurt.
2010: From Denmark. Hamburg, Bremen, Verden, Osnabruck, Teutoburg (Varusschlacht), Hanover, Bergen-Belsen Concentration Camp at Loheide, Luneburg, Schwerin, Rostock (and ferry overnight to Trelleborg, Sweden)
See also http://www.europeroadways.com.