Foto: "<a href="https://www.ccnull.de/foto/view-of-the-street-going-along-the-curved-edge-of-koe-bogen-shopping-center/1027086" target="_blank">View of the street going along the curved edge of Kö Bogen shopping center</a>" von <a href="https://www.ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://www.ccnull.de" target="_blank">ccnull.de</a> - <a href="https://www.flickr.com/photos/30478819@N08/50742464432/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>