Just north of Heger Tor and Felix-Nussbaum-Haus you'll find the 28m-high Bucksturm, built as a watchtower inside the town wall in the 13th century and later used as a prison. Then, in the 16th and 17th centuries, those accused of being witches were tortured here. Today, a small exhibition here on the persecution of ‘witches’ explains why and how this took place.
