Cruise in a group of 38-45 aboard the Grand Circle Cruise Line's privately owned 140- to 162-passenger ships. The Netherlands: Amsterdam | Germany: Cologne, Koblenz, Rüdesheim, Heidelberg, Wertheim, Würzburg, Bamberg, Nuremberg, Regensburg, Passau | Austria: Melk, Vienna Please note, this is a "Performance Tour," so there will be times for rehearsals and concerts at various […]