Trujillo Alcazaba was built originally the 12th century. The city changed hands several times between Christians and Arabs in the 12th century and was finally conquered by Fernando III in 1233. The castle was reformed after Reconquista and again in the 15th century.
Surviving years of abandonment, the French invasion, the Carlist War, the Republic and the Civil War, the Castle is the center of Trujillo’s life. It was declared a historical-artistic monument in 1925 and acquired by the city council in 1929. The last reforms that were made were the construction of a first chapel to house the stone image of the city’s patroness saint in 1546, and later, in 1951, the demolition of such chapel to build a larger one inside between the two main towers (albarran towers), from where the image of the Virgin remains today looking towards her town.
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.