thanks for the comments
@ Fons and Anthony: it is always different because of the colour of reflected light, so one could spend a night there
@ Jakov: this fire extiguisher got immediately my attention, as I got the one of the hotel security, so had to stop after only 3 shots
@ Paco: the rotating Mercedes star is domination the night skyline of the whole area, you find it as well in the tube picture, contrast however is imo greatest with tower and its clock