Yacimiento romano de Celti Historical milestone · Peñaflor, Vega del Guadalquivir, Seville Remains of the Roman city of Celti, with a 1st-2nd-century AD forum, a necropolis with rock-cut tombs reused as dwellings, the cyclopean defensive structure of 'El Higuerón' beside the Guadalquivir, and remains of the Roman bridge of El Retortillo. n/a Photo: TurismoPenaflorcuco (CC BY-SA 4.0) What to see and do in Peñaflor