On the hill of the Castillo de Alhama de Murcia rises an Islamic origin fortress, of the 12th and 13th centuries, located on a steep hill which dominates the town and with favourable conditions to control the Guadalentín Valley route. The castle was part of the border fortifications with the kingdom of Granada, in the South, and with the Aragon one, in the North. The fortress is divided into two distinct areas: a political and military space; and another for shelter and residence for the population. The Torre del Homenaje (Homage Tower) stands out with a full elevation and decorative paintings inside. From the archaeological remains found in the castle, it has been possible to document the Muslim era phases until the middle of the 13th century. In the last third of the 14th century, the castle and the town of Alhama belonged to the Fajardo family estate, together with other towns in the region. After the conquest of Granada, the castle ceased as a border fortress of the valley and it was gradually abandoned, starting the deterioration process over the centuries.
Declared BIC (Asset of Cultural Interest) in 1985, is the landmark of Alhama de Murcia, due to its history and priviledge location.
The restoration work carried out at the Castle is not concluded and sufficient for the monument to be open all the time to visitors, but there are previously arranged visits for groups.