The 1936 siege of the cathedral Historical milestone · Sigüenza, Serranía de Guadalajara, Guadalajara Image of Sigüenza, not of the place itself. Sigüenza was in the Republican zone from July 1936. After weeks of bombardment, the last defenders made a stand inside the cathedral and held out through a week of siege until the surrender of 15 October. The church came out of the episode gravely damaged. 1936 Photo: Cruccone (CC BY-SA 3.0 es) What to see and do in Sigüenza