The Former Cathedral of Baeza was the cathedral episcopal see of the Roman Catholic Diocese of Baeza, which has a Visigothic period, was suppressed after some time under Moorish rule and was shortly restored after the Reconquista under the Kingdom of Castile in the thirteenth century, but suppressed for good, never again to regain (co-)cathedral status.
The site, like the land, alternated between mosque and church during 12th and 13th centuries. The apse still maintains Gothic tracery, but in the 16th-century a major reconstruction by Andrés de Vandelvira in Renaissance-style created the present church. The construction of the cathedral finally ended in 1593, shortly after the death of Andrés de Vandelvira.
The church forms part of a UNESCO World Heritage Site with other monuments in Baeza and in the nearby city of Úbeda.
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.