Campo de concentración de Castuera Historical milestone · Castuera, La Serena, Badajoz Image of Castuera, not of the place itself. After the town was occupied by Queipo de Llano's troops on 23 July 1938, a Francoist concentration camp with wooden barracks operated in Castuera between 1939 and 1940, holding between 6,000 and 7,000 prisoners. 1939-1940 Photo: Amgc56 (Public domain) What to see and do in Castuera