We finally went for a walk/hike around the castle Hohenasperg near Ludwigsburg, the one that is also a prison and the one that I photographed before: http://365project.org/vera365/runner-ups-to-3/2015-11-15 . And yes - from close up, it's also a prison - with the barbed wire all around the inner castle wall, but beautiful views and terraces all around.
Thank you for visiting!