Alaun, Iberian and Roman city Historical milestone · Alagón, Ribera Alta del Ebro, Zaragoza Beneath the urban centre of Alagón lies the Iberian city of Alaun, which minted its own coinage and came to be called Allabone in Roman times. Its position at the confluence of the Jalón with the Ebro made it an obligatory point of passage in the valley. siglo I a. C. Photo: Zagri (CC BY-SA 4.0) What to see and do in Alagón