An Arabic Hins-Canit Castle construction begun in the 9th century and completed in the 16th century. This great fortress was one of the most important during the Humar Bem Hafsum uprising and the Christian and Granada wars.
Its name can be traced back to the Arabic Hins Cannit or Qanit, which, depending on the author consulted, either means “Canit Castle” or is a reference to the canes that can still be found close to the town centre. The present-day name is derived from the aforementioned term, to which the adjective real or royal was added following an order issued by Alfonso XI.
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.