Monteagudo de las Vicarías Castle was located in the centre of the town within the defensive walls that completely surrounded it and that can still be seen throughout the town. It was built between the 15th and 16th century by the Hurtado de Mendoza family, and it has towers and buttresses on the corners, a great indoor courtyard and an octagonal shaped keep. Recent restorations have been carried out on the battlement hexes, the arches and the arcaded gallery.
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.