Aghalurcher (meaning 'Field of the Cast') was a pre-Norman monastery located east of the shore of upper Lough Erne, Northern Ireland, founded according to legend by Saint Ronan in the sixth to early seventh century and dedicated to him in the ninth century. The site includes the ruins of a medieval church with a small gated vault (locked) (where sculptural fragments are stored) and a gateway constructed with stones from the church. The church was remodelled in 1447 with a new roof added. The site seems to have been abandoned after a murder on the altar effectively deconsecrated the church.
The site includes some interesting gravestones of the late eighteenth century, plus an early medieval carved head on the gateway. Additional sculptural fragments from the site are at the Fermanagh County Museum at Enniskillen Castle.
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.