Explore eight countries, discover old-world capitals and stroll through charming villages dusting the banks along Europe’s romantic and historic Danube River. Encounter Prague with visits to Prague Castle and the Old Jewish Quarter. Travel to Passau and step into St. Stephen’s Cathedral. Visit Melk and Dürnstein before sailing through the Wachau Valley toward the Austrian capital of Vienna. Be captivated by the history and allure of Bratislava and Budapest. Wander through Kalemegdan Citadel and ornate Orthodox churches in Belgrade.