St Silin's Church is a parish church in Llansilin. The present building, which has parts dating back to the 13th century, is a Grade I listed building. It stands on a site that has been used by Christian communities since the Dark Ages. The church is dedicated to Saint Silin, now better known as Saint Sulien, the 6th-century founder-abbot of a monastery at Luxulyan in Cornwall.
The church was constructed out of wood in a cruciform shape as a Clas, though it was damaged during Owain Glyndŵr's rebellion and the nave was rebuilt in stone. A 13th-century lancet remains a part of the current building. During the English Civil War, Oliver Cromwell's Roundheads used the church as a barracks and the south door for target practice with muskets. It was also shot at by Royalist forces sieging the church; the door is still in use and still retains the bullet holes. The wooden spire of the church burned down in the 1800s and a replacement stone tower was built in 1832.
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.