The Cathedral of the Resurrection and St. Thomas the Apostle is located in the old town of Zamość. It was built in the late 16th century. It is located in the so-called Route of Renaissance. The Cathedral was established by the city's founder, Jan Zamoyski, and the author of the project was architect Bernardo Morando an Italian, who took as a reference to the Italian churches of 15th and 16th centuries. Initially it was a collegiate church until 1992, when the Diocese of Zamosc-Lubaczów, who rose to the rank of cathedral by decision of then Pope John Paul II was established.
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.