The Monastery of Koutloumousiou is one of twenty monasteries on the Mount Athos peninsula and is located on the northeastern side of the peninsula, near Karyes. It is sixth in hierarchical rank among the monasteries.
While the existence of the monastery is confirmed by document from 1169, Koutloumousiou Monastery was founded in its present form in the 14th century. Its central church was built in 1540. It is considered to be one of the most magnificent of all the monasteries of Mount Athos.
The central church was built in 1540, but there are many chapels associated with the monastery. The most impressive of these is the chapel of the Protection of the Mother of God, built in 1733, which is at the left of the eso-narthex of the central church and contains a wonderworking icon of the Mother of God holding Christ as a child. Other chapels include St. Natalia, Ss. Kosmas and Damian, All Saints, St. John the Baptist, the Archangels and St. Spyridon.
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.