The Bardenberger Mühle or Alte Mühle is an old water mill dating from 1568. An information panel explains it is one of two mills that used to operate at this site. The mills were already mentioned in a document from the year 867. Presumably, the mills operated between 867 and 1899. The farmers from the area were obliged to grind their products at these mills.
Till the 19th century a stream diverted from the river Wurm flowed parallel to the current road, driving three wheels. Nowadays the Mühle houses a hotel/restaurant.
At its heyday, around 1890, 80 mills and other water works were driven by water from the river Wurm. In this way, the river contributed to many industries, e.g. oil, copper, paper, textile and needles.