Pedestrians on the frozen Aussenalster lake in Hamburg, Germany, Europe

alster architecture aussenalster being beings bicycle bicycle riding bicycles bicycling bike bike riding bikes biking bodies body building buildings cold coldness cool coolness cycle cycles cycling day daylight daytime during europe exterior exteriors freeze freezes freezing frost froze frozen germany hamburg human humans ice iced icy in lake lake lakes of on outdoor pedestrians people person persons photo photos ride rides riding shot shots skyline surface surfaces the tower towers up water waters winter wintertime wintery wintry