Wilczy Szaniec - is the name of the Hitler's war headquarters. It is situated in the forest of Kętrzyn (8km to the east of Kętrzyn). On the area of about 2.5 km2 the ruins of Hitler's headquarters have been preserved, which was built in the years of 1940-1944, according to the plans of the organisation known as TODTA. Hitler stayed here from June 1941 to November 1944. In the war time, over 200 objects were built out of reinforced concrete and brick, therein seven heavy bunkers. July 20, 1944 is the day of failed assassination on Hitler, that took place in Wilczy Szaniec.