This is a Malbork/Marienburg, a massive fortress in modern-day Poland constructed by the Teutonic Knights (a military religious order similar to the Templars and Hospitallers).
Originally founded in the Holy Land during the Third Crusade (1190) ...
Hear the songs du jour including “Over the hills and far away”. Remembering HM 66th (Berkshire) at the Battle of Albuera.