Rüeggisberg Priory was founded between 1072 and 1076 by Lütold of Rümligen. He granted the property and estates to Cluny Abbey making it the first Cluniac house in the German-speaking world. Under Cuno of Siegburg and Ulrich of Zell the first cells were built. Construction of the Romanesque church lasted from about 1100 to about 1185, of which there still remain the north transept and parts of the crossing tower. The Priory was dependent on Cluny Abbey and normally had a prior and two to four monks from Cluny. In 1148, it had two priories that were dependent on Rüeggisberg, in Röthenbach im Emmental and Alterswil.
At its peak the priory controlled estates throughout what is now the Canton of Bern, including Guggisberg, Alterswil, Plaffeien and Schwarzenburg as well as scattered farm houses and vineyards on the shores of Lake Biel.
The priory was one of the most important monastic houses of Switzerland during the Middle Ages, but in the late medieval period decline set in, and in 1484 it was incorporated into the newly built college of the Augustinian Canons of Bern Minster. By 1532, when much of the town was destroyed in a fire, the Priory was abandoned. The church was shut down in 1541 during the Reformation. The monastic buildings thereafter served as a source of building stone and partly as a barn.
Between 1938 and 1947 on an archaeological dig the old foundations were again laid bare, as may be seen in the little museum next to the rectory.
The ruins are generally open to the public, though they may be reserved for picnics or other gatherings. Each November an advent market is held in the ruins and over the years a variety of open air plays and concerts have been held here. Between Easter and September, church services are held monthly in the ruins.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.