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 ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.