According to later inscription (presumably from 17th century), St. Giles Church was founded in 1082 by Władysław I Herman as thanks for birth of his son Bolesław III Wrymouth. Actually it was founded probably not later than in 1138 by Hemran's son, Bolesław III Wrymouth. The church was restored between 1924 and 1926 and thoroughly between 1936 and 1938 with raising of the tower by one storey. The restorations changed the architecture of the church.
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.