It was a daughter-house of Gandersheim Abbey, having been founded in 1127 by Agnes, Abbess of Gandersheim, niece of the Emperor Henry IV, and was part of the Cluniac Reform movement.
In this way Clus Abbey stands at the beginning of the great central European monastic reform and unification movement.
In the choir, extended in the Gothic style in 1485, is a high altar which was brought here from Lübeck in 1487.
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