Almazara La Erilla de Nigüelas Monument · Nigüelas, Valle de Lecrín, Granada Image of Nigüelas, not of the place itself. Former oil mill of Nasrid origin, today an interpretation center, considered one of the oldest in Spain; it preserves two milling systems, an animal-powered mill (molino de sangre) from the Ibero-Roman period and a hydraulic mill from the medieval period. Photo: Reinhard Kraasch (CC BY-SA 4.0) What to see and do in Nigüelas