aerial view of gutenfels medieval knight castle above the rhine river in kaub germany top down view

aerial view ancient architecture burg gutenfels castle drone europe famous fort fortification fortress german germany gorge heritage hessen historic historical idyllic kaub landmark landscape medieval middle rhine nature outdoors panorama pfalz pfalzgrafenstein rheinstein river valley rhineland rhinelandpalatinate romantic tower travel unesco world upper vineyard vineyards watchtower wine making