Haut-Koenigsbourg Castle, view of the exterior wall and keep overlooking the Alsace plain, from the grand bastion, Haut Rhin, Alsace, France, Europe

color image photography outdoors no people nobody day scenic scenery building exterior wall restored medieval castle travel travel destinations vertical blue sky architecture building exterior castle haut koenigsbourg castle fortified wall medieval rhine plain haut rhin alsace france europe castle keep keep alsace plain grand bastion