The Moron de la Frontera Castle is located on an elevated hill in the town of Morón de la Frontera, from where the countryside and the southern Sierra Sevillana can be seen.
There also existed Tartessos and Roman settlements, but it was the Arabs who in 711 began to reinforce the remains of the existing Roman and Visigoth walls. In the 10th century when Morón, after the dismemberment of the Caliphate of Córdoba, is converted in the Kingdom of Taifa, and the castle reachs its major prominence. It was then reconquered by King Fernando III “The Saint”. From the middle of the 16th century the castle was inhabited as a habitual residence in turn by the Counts of Ureña, The Dukes of Osuna, etc.
During the XVII and XVIII centuries the castle was practically abandoned, followed by a period of ransacking and destruction ending in 1810.
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.