Experience eight European countries and sail the Danube River on this unforgettable journey! Bookend your adventure with stays in Sofia, Bulgaria, and Prague, Czech Republic. Awaken each day to new discoveries, including Roman ruins, cathedrals, synagogues, mosques, and fortresses. Feast your eyes on Budapest illuminated at night, explore medieval towns, and witness the Iron Gate Gorge, an engineering marvel. Taste delicacies in Croatia and enjoy a Viennese waltz performance.