The old Cistercian monastery of Melón contains in its church one of the largest and most imposing sanctuaries in Galician monastic architecture. It was founded by monks from Clairvaux Abbey in France, in 1142. It was once very powerful, as attested by the remaining architecture.
Various rooms in the monastery, the galleries in the cloister and the two later chapels are currently undergoing restoration, as well as the entrance to the monastic site.
The only element remaining from the primitive Romanesque church with three naves is one section of a nave, the transepts with two semicircular chapels, and an interesting ambulatory with freestanding columns. Its walls and roofs were refurbished once again in the late 19th century in the historicist style. It is topped with cross and quarter-sphere vaults, and has a rectangular tower at the point where the transept meets the naves.
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.