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

tree flower plant autumn lawn grass garden estate leaf park house neighbourhood home yard meadow woodland nature shrub koblenz germany 2023: old stone bridge concrete city mosel estuary rhine town located rivers remaining medieval buildings rebuild historic copies winter regular floods gloomy light deep valleys dark hills area 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