Hardehausen Abbey is a former Cistercian monastery located near Warburg in the district of Höxter in the east of North Rhine-Westphalia, Germany.HistoryIn 1009 Herswithehusen became the property of Meinwerk, bishop of Paderborn. The abbey was founded on 28 May 1140, by bishop Bernhard I of Paderborn as a daughter house of Kamp Abbey on the Lower Rhine. Construction was completed with the dedication of the church in 1165.Between 1185 and 1243 three daughter houses were founded from Hardehausen: in 1185, Marienfeld Abbey in Münsterland; in 1196, Bredelar Abbey near Marsberg; and in 1243, Scharnebeck Abbey in Marienfliess near Lüneburg. Also, the nunnery at Wilhelmshausen (Walshausen) which Hardehausen had acquired in 1293 and subsequently emptied, was re-established in 1320 with a new community of monks.During the Thirty Years' War the abbey was looted and destroyed. During its reconstruction in the years 1680 to 1750 it received its present form.