With this baroque Jesuit church and the former Jesuit house, Passau's southern front along the river Inn gets its typical looks of an Italian town. The Inn river promenade's landmark is a mediaeval tower called "Schaiblingsturm", one of Passau's trade ports, thus telling about the town's past as an important trade centre, having trade connections to Vienna and Bohemia. One of the main goods traded over the rivers was alpine salt.