The Abbey of San Michele is a Benedictine Abbey located at the foot of Monte Vulture, on the eastern flank of the Lago di Monticchio Piccolo.
The abbey was founded in the 10th century at the site of grottoes carved into a rock cliff. There is evidence of worship at the site from the 3rd to 4th century of the modern era. Veneration of St Michael Archangel was developed by the Italian-Greek monks at the site, who were then replaced by Benedictines, who erected the abbey, then abandoned it in 1456. it was occupied by the Capuchin friars. An 18th-century church was built at the site near the rock-cut chapel of San Michele.
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.