For a short moment I was thinking of telling you the solution of this little game, but I've decided to keep you in suspense for some time.
So what are we looking at today: we are now positioned between yesterday's high rise and the loooong building from that day before. The organization that worked here has left these buildings several years ago, but they are still in a good shape. No weeds, no graffiti, no smashed windows. It's like they have left the scene just yesterday, and walking through these empty buildings makes you a bit shiver. The only signs of life are coming from the people who parked their cars, but most of the time you're alone here.
Behind these relief-featured buildings in the background we can catch a glimpse of a residential area, filled with buildings that are much older than the ones at this miraculous site. More residences can be found behind our position here: this whole building complex is surrounded by the city (and a small red-light district), but only few people from the surrounding residences are strolling along here, along this street. (To give you an idea: these photos were taken on a Saturday afternoon.)
So what men were driven up along this road? Mad dictators? Profane billionaires? Germany's secretest Secret Service? Why has nobody mentioned mad scientists yet? Maybe the V2 or similar infernal machines were designed here. Who knows it?
What happened here? Tell me the truth! Quick!
Update: This game is solved. See the answer here.