The ruins of Castillo de Arenas stand on the Cerro del Castillo de Puerta Arenas hill, in the Sierra de Alta Coloma, overlooking the Portillo pass on the River Campillo, historically regarded as the only natural route through this mountainous area between Jaén and Granada. Its strategic position explains its defensive importance during the Middle Ages.
The fortress was built in the 14th century, although it preserves earlier remains dating from the 9th to the 11th centuries. In 1281, Alfonso X acquired the castle through a peace treaty signed with King Muhammad II. During the 15th century, it once again played a prominent role in the conflicts between Castile and the Nasrid Kingdom of Granada.
On 20 April 1462, Constable Lucas de Iranzo attacked the fortress with a large force. The assault was fierce and two of its five gates were set ablaze, though the fortress was not conquered. In the following years, further military attempts were made, confirming the strength and strategic value of the site. Finally, the definitive conquest is attributed to Pedro Coello, Knight of La Vanda, who died in 1486 during the reign of the Catholic Monarchs.
Various chroniclers from the 16th to the 18th centuries mention the castle, highlighting its strength and its control over the so-called ‘Puerta de Arenas’.
Today, these remains bear witness to the area’s border history in the Sierra Mágina and help us to understand the historical significance of this natural pass.
