Carta de población de Campillo de Arenas Historical milestone · Campillo de Arenas, Sierra Mágina, Jaén Image of Campillo de Arenas, not of the place itself. The municipality received its founding charter on 4 June 1539, following the reconquest of the kingdom of Granada. 1539-06-04 Photo: Bernardo Baggio (CC BY 2.0) What to see and do in Campillo de Arenas