As for me, this is the most outstanding engineering structure of the Middle Ages. The heart of the Teutonic Order. I bow low to the restorers who have been restoring this architectural monument for many years after the destruction of 1945.
In the photo, the facade of the cathedral of the High Castle. 35 people were engaged in laying. The laying speed is 2 m per year. The height of the wall is more than 20 m.