koblenz, germany - 12 07 2023: old stone bridge with a concrete part

transport waterway bridge stadium vehicle architecture river landmark city canal building downtown reflection track wall koblenz germany 2023: old stone parking lot mosel estuary rhine town located rivers remaining medieval buildings rebuild historic copies winter regular floods gloomy light deep valleys dark hills concrete koblenz unesco heritage rhine valley middle valley mittelrheintal koblenz koblenz rhein rhein rhine river river valley beautiful europe tourism travel holiday travel destination unesco weltkulturerbe mittelrheintal vacation confluentes coblenz balduinbrücke