Foto: "<a href="https://www.ccnull.de/foto/aerial-of-ship-in-front-of-kranhaus-buildings-on-rhine-river/1038749" target="_blank">Aerial of ship in front of Kranhaus buildings on rhine river</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@N08/40749626301/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>