See Vienna's historic and modern highlights on a hop-on hop-off sightseeing bus tour with audio commentary. Choose between a 24-hour, 48-hour, or 72-hour pass to suit your schedule. All tickets include a self-guided walking tour with an optional guided walking tour or Danube River Cruise available. See some of "Old Vienna's" landmarks including the Opera House, Museum Quarter, Hofburg Palace, Parliament, Town Hall, and the Danube Canal. Proceed outside the city center past Prater Amusement Park to "Modern Vienna", with breathtaking views of the Vienna mountains, UNO City, and Danube Island on the Red Route. Starting in the city center, discover Vienna's famous palaces on the Blue Route. Pass the Hofburg Palace, then out of the city to the Schönbrunn Palace and the Belvedere Palace. See the suburban areas of Vienna, the expressionist landmark Hundertwasserhaus, and the “New Modern” Hauptbahnhof. With the Classic Ticket, benefit from 24-hour access to the sightseeing bus tour to see the best of Vienna in one day. Use the self-guided audio walking tour to learn more about the city at your own pace. With the purchase of a 48-Hour Premium Ticket, join an Inner City Vienna Walking Tour with a licensed guide who will lead you through the pedestrian area of Vienna’s Old Town. Learn more about the fascinating imperial history with comprehensive insight into some of its most notable buildings. Select the 72-Hour Deluxe Ticket option to enjoy a scenic Danube River Cruise. In the evening, gain a different perspective on the city with access to a Panoramic Night Bus Tour with a live guide. Admire the shimmering lights of the city to finish off one of your days exploring the Austrian capital.