koblenz, germany - 09 17 2024: old town houses with corner towers

landmark town architecture downtown city facade neighbourhood tower street road building tourism metropolis skyscraper house plaza koblenz germany 2024: old square fountain rhine marks north mittelrheintal unesco world heritage site mosel river ends right lützel houses corner towers koblenz heritage rhine valley middle valley mittelrheintal koblenz koblenz rhein rhein rhine river river valley beautiful europe tourism travel travel destination unesco weltkulturerbe mittelrheintal vacation confluentes coblenz