In the middle you can see a red car. As far as "we" know today this is the place where there was an entrance to Hitler's bunker and also where Hitler and Eva Braun was burned. The turist sign was installed just before the World Championship in Soccer 2006. The Germans would not (or will not) "advertise" the location of Hitler's bunker, but everyone is asking for it. The bunker still excists underground, but the roof is fallen down (with dynamit). The bunker is so heavily build that "they" have not been able to blast it away.