Tossal del Cabeço Nature · Costur, L'Alcalatén, Castellón The Tossal del Cabeço, the highest point in the municipality of Costur and reachable by footpath, offers views of almost the entire municipality and a wide stretch of land towards Peñagolosa, within the comarca of L'Alcalatén. Photo: Viquipèdia / Wikimedia Commons (CC BY-SA) What to see and do in Costur