The monastery which was founded in 1127 was the third Cistercian monastery to be established in Germany. The monastery was founded by Countess Adelheid as the third Cistercian monastery within German speaking territory and was confirmed in 1137 by Pope Innocent II. By the 15th century the monastery was in decline and the Peasants War brought it to the verge of destruction. In 1525, 800 peasants marched against the monastery. Abbot Paulus and the monks fled taking with them the archives. Today you can see some of the impressive remains of the abbey plus an excellent new museum which was opened in 2006 and is one of the largest and most innovative museums in Europe.