Castillo de Constantina Monument · Constantina, Sierra Norte, Seville Fortress on the Cerro del Castillo whose keep collapsed on 9 March 2010 after continuous rain; it was rebuilt between February 2013 and March 2014 and reopened on 25 June 2014. Sources disagree on the year of its declaration as a Bien de Interés Cultural: some give 1985, while others give 2011 as the date of specific protection for the Cerro del Castillo precinct. 9 de marzo de 2010 (derrumbe de la torre); 25 de junio de 2014 (reinauguración); 1985 o 2011 según la fuente (declaración BIC, discrepancia documentada) Photo: Phillip Capper (CC BY 2.0) What to see and do in Constantina