Alfonsina Tower of the Castle of Lorca Monument · Lorca, Alto Guadalentín, Murcia Rectangular tower of the castle of Lorca ordered to be built by Alfonso X the Wise after 1244, 22.7 by 19.4 metres, with walls 4 metres thick and almost 30 metres high, which gives access to the archaeological park with the remains of the Jewish quarter and the medieval synagogue. Photo: Gregorico (CC BY-SA 3.0) What to see and do in Lorca