This "Fighting Village" was initially built before the First World War by the then Prussian Army. Sited in Berlin, close to the Olympiastadium, it is still in use as a training ground for special police forces. Most of the buildings are constructed from prefabricated concrete parts - even the ones that resemble demolished buildings. A kind of prefab war zone.
There is also a fake church on the training ground that can also resemble a mosque or synagogue - depending on what is currently needed.