Church of San Diego de Tercia Monument · Lorca, Alto Guadalentín, Murcia The parish church of the outlying village of Tercia, bordering the built-up area of Lorca and the Sierra de Tercia. Patronal festivities are held in its honour from 29 July to 1 August, along with the Santa Gertrudis pilgrimage festival on the last weekend of June. Photo: ApoloBuilder (CC BY-SA 4.0) What to see and do in Lorca