Explore 3 stunning rivers & 8 amazing countries on this 23-day journey combining the Grand European Tour and Passage to Eastern Europe cruises. See castles on the Rhine. Cruise Amsterdam’s canals. Behold the grandeur of Vienna. Celebrate folk traditions in Hungary, Croatia, Serbia, Bulgaria and Romania. These travel icons—and more—await you. Discover eight countries in Western, Central and Eastern Europe while cruising the Rhine, Main and Danube. Enjoy a lifetime’s worth of experiences on a single voyage.