Alagón sugar factory Historical milestone · Alagón, Ribera Alta del Ebro, Zaragoza The sugar factory of Alagón, raised in 1900, is one of the catalogued examples of Aragonese industrial architecture. It formed part of the sugar beet cycle that transformed the irrigated agriculture of the middle Ebro valley at the beginning of the twentieth century. 1900 Photo: Zagri (CC BY-SA 4.0) What to see and do in Alagón