Saint Aignan Church was originally built around year 400, in the era of pre-Romanesque, by the bishop of Chartres - later his name has given as the name of the church. The church is considered as the most ancient parishes in Chartres. In its history, the church has suffered from several times fire in 12th, 13th and in the early 16th century. Most of the church was rebuilt after the latest misfortune in the 16th century.
The main portal in the center of the front facade was the only part of the church that preserved for the new church. The church also suffered several times of change function during the French Revolution - it was once served as a military hospital, then once became a prison and even as a fodder shop. It finally returned as a worship place in 1822.
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.