St Peter's Church stands at the heart of the upper town, which had fortifications in the Middle Ages. Its entrance portal looks out onto a square on which stand a mission cross and the portal of the clergy house, both classified monuments historiques as well.
St Peter's Church is a former collegiate church with a Romanesque tower and a modern belltower. Its 12th-century nave and side aisles have capitals. The transept also dates back to the 12th century; yet its chevet was modified in the 18th and 19th centuries.
The church houses the tombstone of Saint Euchaire, a 16th-century Renaissance gisant in a funeral niche. The interior is also decorated with 18th-century paintings and old mural paintings.
The western portal was modified but a part of the old sculpture is still visible today.
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.