The history of Trigueros Castle isn't very well known. It is not built on a strategic position because, although located on a small hill in the village, it is dominated by other higher hills. So, the castle was probably more a fortified residence than a military strength. Also the name of the village church, an older building on a higher hill; Santa Maria del Castillo, seems to indicate that the most suitable place of a preceding strength already had been taken.
By its groundplan and disposition it seems to have been build in the 14th century. And reformed and completed in the 1453 as indicated by the coat of arms of Gutierre de Robres (or Robles) and his wife Maria de Guevara, placed above the entrance gate.
Visitors can admire the stables, as well as several blocks that once formed part of the Keep and gateway walls. The main entrance to the castle boasts the coats of arms of Gutierre de Robles and his wife María de Guevara, the lord and lady of the castle who carried out a considerable amount of work on the castle, as well as an inscription featuring the year 1453.
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.