Exterior of Debis Tower and Kollhoff Tower at night, Potsdamer Platz, Berlin, Germany, Europe

debis tower kollhoff tower night potsdamer platz berlin germany german europe european photography colour colour image color color image outdoors outside background people incidental people people in the background building exterior building buildings architecture architectural modern 20th century futuristic glass lens flare flare sunburst downtown skyscraper street city cities cityscape angry sky illuminated lit lit up geometric vertical vertical image