Marienkloster

Around 939, a convent for canonesses was established in Gandersheim, and its newly constructed church was consecrated in the same year by Bishop Diethard. The patronage was dedicated to Mary, the patron saint of the Diocese of Hildesheim. Following a fire at Gandersheim Abbey in 973, Abbess Gerberga II transformed the convent into a Benedictine nunnery after its reconstruction, functioning as a proprietary monastery of the abbey. The consecration of the associated church was delayed due to the Gandersheim Dispute and was finally carried out in 1007 by Bruno of Augsburg. The monastery's endowments primarily included estates in the northwestern foreland of the Harz Mountains, as well as Gerberga II's personal properties. Later, some of these assets were transferred to the Archdiocese of Bamberg as part of a land consolidation, while Marienkloster received lands in Derenburg and several now-abandoned sites in return. The Vogtship was held by the abbey's vogts and later came under the influence of the territorial rulers. In the 13th century, the monastery developed into a collegiate chapter with canonesses and canons. Reform efforts in the 15th century, aimed at restoring the Benedictine order, initially met with resistance but were later implemented within the framework of the Bursfelde Congregation. This led to structural expansions and financial difficulties. During the Reformation, the monastery was eventually secularized, and its assets were confiscated in 1570, to be assigned to the newly founded Paedagogium illustre and later to the University of Helmstedt.

The Marienkloster was situated in the town of Gandersheim, which is part of the Northeim district in Lower Saxony, Germany. The exact location of the buildings was east of the medieval city moat, between the present-day Marienkloster and Marienstraße streets.

Of the original monastic buildings, only a Romanesque capital remains today. The Gothic-style church built in 1274, like the other monastery buildings, fell into disrepair or was destroyed by fires. By the 17th century, there was no longer a west tower, and in the early 18th century, the building was described as derelict.

• Wilhelmsburg (castle, approx. 242 m away)
• Gandersheim Abbey (sacred building, approx. 246 m away)
• Gandersheim Castle (castle, approx. 332 m away)
• Brunshausen Monastery (sacred building, approx. 1562 m away)