Reussbühl, August 1999
12 x 14 x 7 inches
A model of the castle Kyburg, which can be rotated, hangs on the wall. There is a hidden maze under the keep.
You insert a little steel ball in the hole on the slope on one side of the castle. It is quite difficult to pilot the ball through the maze by turning the model until the ball falls out of the hole on the other side. Sometimes the ball is even visible in the well.