See Bucharest’s 3,000-room Palace of Parliament. Make banitsa bread with a home cook in Vidin. Explore Belgrade’s Ottoman and European treasures, including 6th-century Kalemegdan Fortress. View the Danube’s towering Iron Gate. Visit a Croatian family’s Osijek home. Witness Hungary’s daredevil Puszta horsemen. Behold Budapest’s grandeur. Once hidden behind the Iron Curtain, the eastern Danube still has secrets to reveal on this enriching cruisetour.