Vienna
After breakfast, you have two choices for how to spend the day. The first is a walking tour of picturesque Passau, a fairytale city founded more than 2,000 years ago, where you will see the city fortifications and St. Stephan's Cathedral, home to Europe's largest pipe organ. Afterwards, take some time to explore the town's Christmas Market. Or take an optional full day excursion to Salzburg, birthplace of Wolfgang Amadeus Mozart and the setting for ''The Sound of Music''. You will have time to visit Salzburg's beautiful Christmas Market, renowned for local handicrafts and one-of-a-kind holiday presents. If you prefer to stay on board, enjoy a scenic cruise from Passau to Linz. After arriving this evening, feel free to take a walk through this delightful town or browse for keepsakes at yet another charming Christmas Market. The ship departs around midnight and cruises overnight. (B,L,D)