rhens, germany - 06 05 2023: königsstuhl, stairway down

wall arch architecture blue infrastructure iron bridge art road symmetry tunnel rock black darkness window reflection light temple rhens germany 2023: königsstuhl top view small town rhine valley area mittelrheintal unesco world heritage site river medieval like castles ruins old houses maintained building crowing ceremony german king called emperor time stairway town center historic history medieval building architecture heritage culture