St. Trudpert's Abbey

He established a hermitage in Münstertal which became a monastery in the 9th century, and which by, at the latest, 900 had expanded to a monastic community supported by the influential noble family of the Liutfride.

The abbey's development during the next few centuries seems to have been peaceful: no involvement either in ecclesiastical reform or in the Investiture Controversy is recorded.

In 1346, together with the castle of Burg Scharfenstein, a property of the Staufer (see below), it was destroyed by armed men from Freiburg, and shortly afterwards flooded, from which disasters it never recovered, and was abandoned.

The monastery in turn suffered an economic decline in the latter half of the 14th century, apparently during the time of abbot Paul I (1435-1455).

The basilica, with three aisles, was extended by the addition of a westwork in about 1100; in the 15th century new monastic buildings were constructed, as well as a Gothic long choir (Langchor).