My wife's ancestor Hans Landis, one of the last known Anabaptists martyrs in western Europe, was executed in the year 1614, just 400 years ago.
Swiss Mennonites are raising funds to preserve the castle as a museum honoring the memory of Anabaptists who were imprisoned and tortured there as heretics between the 16th and early 18th centuries.
Observers call the project an example of Mennonite-Catholic collaboration in the spirit of other exchanges over the past decade or so.
It is the 31st plate known to exist of the original 104 etched by Dutch artist Jan Luyken.
