NS-Ordensburg Vogelsang, Vogelsang National Socialist Castle, was a training ground for young Nazi men. A place to shape them into tools and leaders of the National Socialist cause. Turned into a barracks during the war and then occupied by the British who turned it over to the Belgians, it has now been returned to Germany with much of its Nazi "glory" still intact. You can
read about the castle,
see some amazing photos and get more information from
Wikipedia.
Ordensburg Vogelsang just cries out to be used in a pulp adventure.