The freestanding minaret now associated with the church of San Juan was constructed with its mosque (no longer extant) in 930 during the reign of the first Spanish Umayyad caliph 'Abd al-Rahman III (912-961 C.E.) It is square in plan and constructed of brick and stone with double horseshoe-arched windows on each face. The voussoirs of the arches are constructed of alternating brick and stone. Small stone columns topped by Corinthian capitals and plain impost blocks divide each window. The remains of diminutive white stone columns are visible above two of the windows. It and the church it stands beside are owned by the religious order Esclavas de Jesús.
King, Geoffrey. 1996 ed. "Spain." In Architecture of the Islamic World. London: Thames and Hudson, p. 212-213.