Marc, is the museum still attached to the Wewelsburg castle? I have a very old lithograph of a painting that was once in the castle. It is of a knight on horseback looking across the valley up at a castle. It is supposed to represent the knight looking for the Holy Grail in the Holy Grail castle. The only castle I have not been in is the Wewelsburg castle. I understand the painting was moved from the castle to the museum a number of years ago. Any help appreciated. James