Sail Amsterdam’s canals. See castles on the Rhine. Behold the grandeur of Vienna. Celebrate folk traditions in Hungary, Croatia, Serbia, Bulgaria and Romania. These travel icons-and more-await you on a 23-day journey combining our Grand European Tour and Passage to Eastern Europe cruises. 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.