The main landmark of Castrop-Rauxel:
The tower of the former coal mining factory 'Zeche Erin'.

Watched each car around the tower, looking for the best reflection shot.
Well, you shouldn´t do that.
At least, if it is the parking place for the private cars of the policemen, working in the nearby station.
Was confronted with one of these suspicious guys in the end, asking me, why I captured his car.
Showed him the shots, and in the end he was a bit more friendly, when I told him:
'I´ve chosen your car for the best reflection shot, because it was the cleanest one.'