Upon arrival in Linz, Austria this morning, you’ll be able to choose how this memorable day will unfold for you. The first choice is an optional excursion to Salzburg, where you enjoy a walking tour of the historic center, famous as the setting for the “Sound of Music” and as the birthplace of Mozart. This tour also includes the Mirabelle Gardens, Salzburg Cathedral, Mozart’s Square, and much more. In the alternative, remain on the ship and cruise through scenic Upper Austria to Passau. Located where the rivers Inn and Ilz join the Danube, this 2,000-year-old German city is noted for its Gothic and Baroque architecture. A walking tour of Passau will take you along the cobblestone streets of Old Town to see the city’s ancient fortifications and historic St. Stephan’s Cathedral. Meals B+L+D