The origins of this Benedictine abbey in Alet remain unknown: its foundation is attributed to Béra, the count of Razès, and his wife, Romille, in 813 A.D. but the documentary source of this information is not sure.
The history of the abbey has been one of a succession of quarrels and conflict due to its strategic location: for example, in the 11th century the abbey was ravaged by the Count of Carcassonne, then, in 1119, Alet abbey's rights over the abbey of Saint-Polycarpe were recognised to the detriment of the Lagrasse abbey.
The 12th century marked the peak of the abbey's history. It was very influential and attracted many pilgrims who came to see the abbey's relics of the Holy Cross.
The abbey was greatly weakened by the Crusade against the Cathars because of the ensuing conflicts with the Archbishop of Narbonne and the confiscation of property.
The Diocese of Alet was one of several bishoprics created in 1317 in the wake of the suppression of the Cathars. In Alet the bishops were also the abbots of the already existing monastery there and the cathedral of Our Lady was built next to the abbey.
In 1577 the cathedral was largely destroyed by the Huguenots during the Wars of Religion and was not subsequently rebuilt. The immense Gothic quire was demolished by order of the last bishop, Charles de la Cropte de Chancerac in 1776. The diocese of Alet was not restored after the French Revolution and by the Concordat of 1801 its parishes were added to the Diocese of Carcassonne.
The cathedral ruins remain a spectacular sight. As the main cathedral was for so long in ruins, part of the monastic buildings were used as an emergency substitute. These premises were known as St. Benedict's Cathedral.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.