Aqueduct of El Arco de Soneja Monument · Soneja, El Alto Palancia, Castellón Image of Soneja, not of the place itself. Aqueduct of Islamic origin in Soneja that still carries water from the Palancia river to the municipality's market gardens, specifically channelling the waters of the main irrigation ditch. It is listed within the town's civil heritage as an outstanding example of hydraulic architecture from the Muslim period in the comarca of Alto Palancia. Photo: Joanbanjo (CC BY-SA 4.0) What to see and do in Soneja