The ship arrives this morning in Linz. Enjoy a walking tour of the second largest city in Austria or choose a guided bike tour that will show you around the Old City Center, along the Danube River, and past the ultra-modern Ars Electronica Center. Later, you will have a choice of three different excursions. The first option is an excursion to Salzburg, Mozart’s birthplace, where you will take a walking tour of the historic center made famous by "The Sound of Music.” The second option is an excursion to the Czech town of Cesky Krumlov, a wonderfully preserved medieval town nestled in the hills just over the Austrian-Czech border. The third option is a visit to the Austrian Lake District, the scenic Salzkammergut region. All three options are UNESCO World Heritage Sites. (B,L,D