upper middle rhine valley unesco world heritage site with historic town of oberwesel in river gorge, rhineland palatinate, germany

town mountain village tourism vacation hill landscape river landmark valley upper middle rhine unesco world heritage site historic oberwesel gorge rhineland palatinate germany medieval beautiful rhineland-palatinate iconic ochsenturm koblenzer torturm complete city walls saint martin church germany towers tower fortification gate history houses roofs old bend clouds blue sky sunshine vineyards steep slopes fortified Middle Ages nature natural environment scenic scenery landscape view viewpoint protected west western German Europe travel