silhouette skyline panorama of city of dortmund, germany

germany dortmund europe westphalian arnsberg silhouette skyline cityscape north rhine-westphalia rhine-westphalia line city town outline urban architecture ruins medieval building exterior facade river historic historical landmark monument outdoor outside tourism tower travel sightseeing tourist sights downtown old hotel vacation vector city hall saint reinold church town altes hafenamt industrial museum zollern petri castle bodelschwingh stadthaus