The very nib of the Altstadt peninsula, the point where the rivers merge, is known as the Dreiflusseck. From the north the little Ilz sluices brackish water down from the peat-rich Bavarian Forest, meeting the cloudy brown of the Danube as it flows from the west and the pale snow-melt jade of the Inn from the south to create a murky tricolour. The effect is best observed from the ramparts of the Veste Oberhaus.

Lonely Planet's must-see attractions

Nearby Passau attractions

1. Museum Moderner Kunst


Gothic architecture contrasts with 20th- and 21st-century artworks at Passau's Modern Art Museum. The rump of the permanent exhibition is made up of…

2. Altes Rathaus

0.36 MILES

An entrance in the side of the Altes Rathaus flanking Schrottgasse takes you to the Grosser Rathaussaal, where large-scale paintings by 19th-century local…

3. Grosser Rathaussaal

0.37 MILES

Located in the Altes Rathaus, the Great Assembly Room has wonderful murals by local artist Ferdinand Wagner, showing scenes from Passau's history with a…

4. Passauer Glasmuseum


Opened by Neil Armstrong, of all people, Passau's warren-like glass museum is filled with some 30,000 priceless pieces of glass and crystal from the…

5. Veste Oberhaus


A 13th-century defensive fortress, built by the prince-bishops, Veste Oberhaus towers over Passau with patriarchal pomp. Not surprisingly, views of the…

6. Dom St Stephan

0.51 MILES

There's been a church on this spot since the late 5th century, but what you see today is much younger thanks to the fire of 1662, which ravaged much of…

7. Römermuseum

0.69 MILES

Roman Passau can be viewed from the ground up at this Roman fort museum. Civilian and military artefacts unearthed here and elsewhere in Eastern Bavaria…

8. Stift Engelszell

12.87 MILES

The little riverside village of Engelhartszell an der Donau is home to one of only eight licensed Trappist breweries outside Belgium, and the only one in…