Passau, near the German border with Austria, is a special city. It’s at the [tooltip title="confluence" content="合流地点"]confluence[/tooltip] of three rivers – the Inn, the Ilz and the [tooltip title="mighty" content="雄大な"]mighty[/tooltip] Danube, Europe’s second-longest river.

The rivers shaped the city economically, bringing trade and wealth, and also literally. The old town is built on