Berlin is in a special situation due to the history. As only west Berlin belonged to west Germany and east Berlin and all the surrounding areas were part of the

Berlin is in a special situation due to the history. As only west Berlin belonged to west Germany and east Berlin and all the surrounding areas were part of the DDR, there is still a steep fall-off in industrialization as soon as you leave the direct Berlin area. Also in the DDR the industrial centers were in other cities than Berlin. So there should be plenty of cheap real estate not too far from Berlin. Also in Bavaria, once you leave Munich (BMW), Augsburg or Ingoldstadt (Audi), there is quite a steep drop-off in density. The traditional high-density industrial regions of Germany are rather in the west and south-west.