Work began in 1937 and Hermann Göring visited in the spring of 1938. By 1939 several installations were complete but as the war progressed advantageously for the Germans in 1940 the site remained unfinished.
In 1937 work started, and in the spring of 1938 Hermann Göring visited. By 1939 some installations were completed, yet due to favorable conditions for Germany during the war in 1940 the project was not fully finished.