Asedio del castillo de Utrera (1477-1478) Historical milestone · Utrera, Bajo Guadalquivir, Seville Image of Utrera, not of the place itself. Between 9 November 1477 and 29 March 1478, Isabelline troops under Gutierre de Cárdenas besieged and took by storm the castle of Utrera, defended by Fernán Arias de Saavedra. 1477-1478 Photo: Tirithel (CC BY-SA 4.0) What to see and do in Utrera