Sometimes referred to as the Dreiflüssestadt or "City of Three Rivers", Passau is located at the confluence of the Danube, Inn and Ilz rivers. As such it’s tourism highlights are focused mainly around these three rivers, from St. Stephen’s Cathedral, home to Europe’s largest pipe organ, to the Old City.
Passau’s historic wealth through trade is reflected in the beauty of its Medieval merchants’ houses. The city’s Italian Baroque buildings, erected after the big fire of 1662, match the historic town center with its winding little streets and narrow alleyways. The town is dominated by the Veste Oberhaus and the former fortress of the Bishop, on the mountain crest between the Danube and the Ilz rivers.