koblenz, germany - 09 12 2022: park bench at ancient walls

river water waterway reflection reservoir tree lake canal bridge landmark sea pond tourism shore coast tower park koblenz regional center rhine mosel old town located rivers called rhein-mosel-stadt touristic context marks north mittelrheintal unesco world heritage villages castles medieval deutsches eck estuary ship shaped front holding german states flags horse reunification monument 1990 festung ehrenbreitstein direktly east side germany 2022 background flood walls gate bridges 2022: bench ancient