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 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.