Castillo de Félix is an eleventh-century Arabic fortress located in the village of Félix in Almería province, originally constructed as part of the defensive system protecting the taha of Marchena. The small quadrangular fortification features masonry foundations with rammed earth upper levels, strategically positioned to defend against Christian incursions and maintain surveillance over surrounding territories. During the Granada War and subsequent Morisco rebellion, the castle served as a refuge for Muslim forces before losing military functionality after 1571. Today, only one bastion and fragmentary wall sections remain standing, designated as a Site of Cultural Interest, providing archaeological evidence of Islamic military architecture in medieval Andalusia.