Buzay Abbey was a Cistercian Abbey at Rouans in Pays de la Loire, France, formerly in Brittany. Bernard of Clairvaux founded the abbey at Buzay in 1135. The abbey became rich, thanks to the salt trade, commercial traffic on the river Loire, and many gifts of land and other property. In 1177, Robert II, bishop of Nantes, approved the addition of a convent for nuns. In 1180, Geoffrey Plantagenet, Count of Nantes, a son of Henry II of England, Duke of Normandy, and of Eleanor of Aquitaine, assigned to the abbey in perpetuity twenty livres to be paid by the mills of the surrounding parish.
With effect from 1474, commendatory abbots were appointed by the duke or king, replacing the regular abbots elected locally.
During the War in the Vendée (March – December 1793), following the French Revolution, Buzay Abbey was destroyed by fire. What now remains of the buildings is a tower which had been rebuilt in the 18th century, and some vaulted cellars. Other survivals are the bells, which were transferred to Chartres cathedral, an Italian marble altar, which was moved to the church of Saint-Louis in Paimbœuf, a pulpit, now in the church of St Peter in Bouguenais, and some other objects, including the oldest crucifix in the Pays de Retz, dating from the fourteenth century, in the chapel of St Anne of Tharon at Saint-Michel-Chef-Chef.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.