Monasterio de Tentudía Monument · Calera de León, Tentudía, Badajoz Gothic-Mudejar-style monastery that preserves a 1518 ceramic altarpiece by Niculoso Pisano, made up of 640 tiles. Retablo: 1518 Photo: Jorge6880 (Wikimedia Commons) (CC BY-SA 2.5) What to see and do in Calera de León