The Territorial Abbey of Montevergine (Territorialis Abbatia Montisvirginis) is a Roman Catholic territorial abbey located in the commune of Montevergine in the ecclesiastical province of Benevento in Italy.
About 1120 William of Vercelli founded an abbey of eremitic inspiration dedicated to the Holy Virgin. It was consecrated in 1124 on Mons Sacer, so called because of the ruins of a temple of Cybele. Catherine of Valois and her son, Louis I of Naples, are buried in the abbey. The new basilica, built in 1961, is home to a 13th-century Byzantine icon of a black Madonna. In 1926 it was established as the Territorial Abbacy of Montevergine.
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.