The Guadalentín river valley is a natural road link that was very important during the Middle Ages, as it was the border crossing between the kingdoms of Castile and Granada. That is why there are so many defensive fortresses and watchtowers in the territory, Lorca Castle being the most important one. Alfonsina and El Espolón towers, built during the reign of King Alfonso X following the capitulations of 1244, together with the walls are the most outstanding elements. We can also find some remains of Islamic buildings, the ruins of the Jewish quarter and its synagogue, together with the 19th century military buildings, all reflecting an extensive sequence of human occupation. Lorca Taller del Tiempo reopened the monument to the public in 2003, creating an important centre of culture and tourism: la Fortaleza del Sol.
