You only see what you know (Goethe)
River cruisers may know the mighty Veste Oberhaus high over the Danube River. But there is also a town wall in Passau. You’ll find the depicted towers in the Innstadt area. This city district lies between the Inn River and the Austrian border. [German]
The Bavarian city of Passau has a rich Roman history. On the grounds of the Roman museum Boitro (Römermuseum Kastell Boitro), you still see parts of an ancient fort like the walls of a fan-shaped tower.
The Hall of Liberation (Befreiungshalle) is a Neoclassical monument on Michelsberg Hill near the town of Kelheim. King Ludwig I of Bavaria commissioned this building to commemorate the victory over Napoleon in the German Campaign of 1813 (Befreiungskriege). [German]
I took this pic of Veste Oberhaus (Oberhaus Fortress) from the town hall square in Passau. From this fortress, one has a great view of the three rivers of Passau, which are generally visible in three different colours: Danube (Blue), Inn (Green) and Ilz (Black).
St. Stephen’s Cathedral is a Baroque church in the city of Passau. It is widely known for its large organ. It consists of 17,774 pipes and 233 registers. In the background, you see the fortress of Passau.