In May 1017 Cunigunde was staying on the imperial estate of Kaufungen when, according to Thietmar of Merseburg, she became seriously ill and vowed to found a monastery if she recovered.
In 1089, the nunnery became an Imperial abbey, territorially and judicially independent, subject only to the Holy Roman Emperor .
During the 12th century, the abbey was transformed to house a community of secular canonesses, becoming a home for unmarried female members of the nobility (Frauenstift).
It continued in this form until 1509, when, at the instigation of William II, Landgrave of Hesse, the abbey was returned to the Benedictine Order, under the authority of the Bursfeld Congregation.
It is now used as the parish church and is counted as the most significant structure of the late Ottonian period in north Hesse.