To be honest: this is not a photograph that I took during a city trip. It was made when I left my office, after a day`s hard work.
I was standing on the car park, on top of the factory, and saw the cooling tower of the power plant nearby. Just a few months ago they had installed an impressive dynamic light display against it's sides.
The picture was taken with a small 2 MP camera wich I always carry with me. I set it up on the roof of my car and the technology did the rest!