Marchenilla Castle was built during the times of Muslim domination, in the 11th and 12th centuries, although after the Reconquest by Ferdinand III is when it acquired its definitive layout. Important development was still taking place right up to the late 15th and early 16th century.
The Castle is located on a promontory which is high enough to completely dominate the surroundings, in the same place as previous human settlement was to be found in the Bronze Age.
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.