EntityQ1438547· pop 5· linked from 10 articlesFort ConstantinSign in to savewas part of Koblenz fortress and was built 1827ConnectionsGermanEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityKoblenzEntityfortificationEntityGrand Duke Konstantin Pavlovich of RussiaEntityHague Convention for the Protection of Cultural Property in the Event of Armed ConflictEntityEhrenbreitstein FortressEntityCategoriesBuilding and structure articles needing translation from German WikipediaBuildings and structures in KoblenzFortresses in Germany