Veste OberhausThe building is located on the mountain crest (St.Georgsberg) between the Danube and the Ilz rivers and dominates the city of Passau that is located on the opposite, right side of the Danube. Below Oberhaus on the tip between the rivers Ilz and Danube is Veste Niederhaus, part of the fortress system. The fortress was attacked five times between 1250 and 1482. Twice, 1298 and 1367, the citizens of Passau themselves rebelled against the Bishop. Veste Oberhaus was never conquered militarily. The Bavarians occupied the fortress in 1741 but were forced out by the Austrians one year later. They returned the fortress to the Bishop in 1745.