Shipping on the river Rhine, Koeln-Duesseldorfer, Mittelrhein, Rhineland-Palatinate, Germany, Europe

unesco world cultural heritage holidays adults photographing people caucasian appearance relaxation casual clothing sitting senior adult men rear view nature photographing travel women summer water european ethnicity outdoors tourist river vacations traffic ship person river rhine riverside riverbank transportation unesco side view tourists medium group of people head and shoulders leisure activity horizon day sky mid adult excursion boat outdoor photography evening nature landscape architecture summer rhine shipping ship koeln duesseldorfer cultural heritage of the world: oberes mittelrheintal mittelrhein rhineland palatinate germany europe