historic cultural monument tower landmark called 'nibelungenbrücke' or 'nibelungentor" on bridge in worms

gate worms age arch architecture archway blue brick brickwork bridge clock historic mediaeval medieval middle nibelungen old rhenish rhine rhinehessen rhinelandpalatinate river roof schist shale sky slate times tower town wall cultural monument landmark called 'nibelungenbrã¼cke' 'nibelungentor city germany historical 'nibelungenbrücke'