Kanonissenstift, später Zisterzienserinnenkloster Worms (Nonnenmünster/Marienmünster)

The Nonnenmünster, later known as Marienmünster, was a Cistercian convent for women near Worms in the south-west corner of the city’s outer ring of medieval walls. Its grounds lay between the Aulturm, the south-eastern corner tower, and the next tower to the north, and two diverted channels of the Eisbach stream ran through the site. A stone culvert carried the water under the wall towards the Rhine, the flow regulated by an 11th-century charter that was forged around 1140 to favour the convent. The old Roman road from Worms to Speyer originally passed straight through the grounds, but in 1275 it was rerouted west of the church, leaving the usual roadside cemetery on either side. The convent began in the 9th century as a women’s collegiate foundation linked to the Worms bishopric. Bishop Burchard reorganised it as a secular canonesses’ house in 1016 and installed his sister Mathilde as abbess. By the 13th century the stricter Cistercian way of life was preferred, and after a papal order in 1236 the community adopted the Cistercian rule despite resistance from the nuns and their clergy. In 1244 the general chapter accepted the convent into the Cistercian order, though formal confirmation came only in 1302. The bishop who enforced the change, Landolf of Hoheneck, was buried in the church in 1247. Visitors today find the church standing within the old walled precinct where the nuns once buried their dead. The Roman road still curves past the southern edge, and the Eisbach’s channels are visible along the eastern boundary. A raised burial mound once claimed to be the grave of Siegfried the dragon-slayer stood in the cemetery, and in 1488 Emperor Frederick III ordered an excavation there. The cloister and domestic ranges have vanished, but the church’s medieval fabric remains, a quiet witness to the convent’s long history between the 9th and 19th centuries.