Engelberg Abbey () is a Benedictine monastery in Engelberg, Canton of Obwalden, Switzerland. It was formerly in the Diocese of Constance, but is now in the Diocese of Chur. It is dedicated to Our Lady of the Angels and occupies a commanding position at the head of the Nidwalden Valley. History The Engelberg abbey was founded on the 1 April 1120 by Count Conrad of Sellenbüren, and its first abbot was Adelhelm, a monk of the Muri Abbey. The first inhabitants of Engelberg were also monks from the Muri abbey. Von Sellenbüren entered the Engelberg abbey as a monk and died on the 2 Mai 1226. Pope Callistus II and the Emperor Henry IV both officially acknowledged the abbey in 1124. The abbey was placed under the immediate jurisdiction of the Holy See, who put it under protection by Saint Peter. In November 1224 Emperor Henry VI then also officially put the abbey under his protection. In the founding documents, the new abbey was known as Mons Angelorum and Engilberc. Adelhelm, abbot until 1126, was followed by three disputed abbots which divided the community. They were followed by three abbots from St. Blaise's Abbey in the Black Forest, Frowin (1143/47-1178), Berchtold (1178-1197) and Henry (1197-1223). Under Frowin a scriptorium was founded. Around 1200 the Engelberger Meister wrote and illustrated several books from the scriptorium. Since Frowin, the abbey was a so-called double monastery, in which both nuns and monks lived. The nuns established the in Sarnen in 1615. In spiritual matters the abbots of Engelberg exercised quasi-episcopal jurisdiction over all their vassals and dependents, including the town which sprang up around the walls of the abbey, and also enjoyed the right of collation to all the parishes of the Canton. In temporal matters they had supreme and absolute authority over a large territory, embracing one hundred and fifteen towns and villages, which were incorporated under the abbatial rule by a Bull of Pope Gregory IX in 1236. These and other rights they enjoyed until the French Revolution, in 1798, when most of them were taken away. Its population diminished several times by the plague in the years 1349, 1548 and 1565. In 1565, only one priest who was on service in Küssnacht survived of the community. The prominent position in Switzerland which the abbey occupied for so many centuries was seriously threatened by the religious and political disturbances of the