Next to the stump at the mouth of the Wisper, the only preserved town tower of the former city wall between the Weiseler Gate and the Schauer Gate. The 'Schauerweg' today recalls this gate (Schauer = barn). The name 'Hexenturm' dates back to the year 1520, when a Presberger, according to tradition, had his mother-in-law locked up as a witch in order to gain her property.