St. Marx Abbey was a Benedictine nunnery in Gueberschwihr in Alsace, founded in about 1105. Since 1845 it has been the principal house of the Sisters of St. Joseph of St. Marc, rebuilt in 1852 after a disastrous fire.
Before the foundation of the nunnery there had been a community of monks on the site, which came to an end after a serious fire. Abbot Theoger of St. George's (1088-1119) replaced it with the nunnery, which was made subordinate to St. George's in 1184, according to a deed of Pope Lucius III. In about 1400 a monk of St. George's was mentioned as the prior here, as were possessions of the nunnery in Geberschweier and Osenbach.
In 1710 a beer brewery was built there. In 1754 the priory was transferred from St. George's to Ebersmünster Abbey in Alsace.
In 1845 the premises, empty since the French Revolution, were used by Abbé Pierre Paul Blanck to establish a women's community under the Benedictine Rule combining the veneration of the Holy Sacrament with manual labour and the care of orphans. The buildings burnt down in 1852 and the difficulties facing the new community were so great that it seemed impossible for it to survive. Against all odds it did continue and was constituted as a formal order on 9 October 1868 with the election and appointment of Sister Maria Xavier as superior.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.