The Køge Huskors — 'house crosses' — refers to the marks carved on doorways and lintels around the old town to ward off the witches that the townsfolk believed were gathering in their streets. Some of these marks are still visible on buildings in the historic centre. They are easy to miss if you do not know to look for them.
A walking trail connects several sites associated with the trials. Pick up a map from the tourist office or the museum. The episode is sobering and strange in equal measure, and it casts the handsome medieval streetscape in a rather different light. Køge was a prosperous, educated town by the standards of the time — which is precisely what makes the story so unsettling.