St. John the Evangelist's Church in Paczków, Poland, is a Gothic church built in the fourteenth-century. The construction began in the year 1350 and lasted around 30 years. The shrine was funded by Bishop of Wrocław Preczlaw of Pogarell, who administered between 1341 and 1376. The present form of the church is in the Renaissance, Baroque and Neo-Gothic architectural styles. In the fifteenth-century, from the chancel's southern side, there was built a spanning chapel, dedicated to Holy Virgin Mary. The tower, partially deconstructed in 1429, was rebuilt in 1462. It was then that the upper condignation was constructed.
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.