The Church of St St Michael and All Angels, is the former parish church of Gwernesney. The church is thirteenth century in origin but with much fifteenth century work. The double bell gable, and more, was restored in 1853–4 by John Pollard Seddon. It is built of Old Red Sandstone.
The interior contains a late medieval screen. The church register of baptisms and burials dates from the year 1758 and that of marriages from 1757.
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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.