Santa Gadea Church

The small church of Santa Gadea (Santa Águeda) on Calle Fernán González is one of Burgos's oldest, with a Romanesque core dating to the eleventh century. It has been rebuilt several times but retains its character as a neighbourhood parish church rather than a tourist sight, which means you can often visit in peace.

The church is famous as the setting for one of the most dramatic episodes in the El Cid legend — the oath-taking scene in which Rodrigo Díaz forced King Alfonso VI to swear his innocence in the death of his brother. The episode became the subject of countless ballads, plays, and the 1961 Charlton Heston film. A plaque on the exterior marks the historical connection.

things to do sight
A story
In 1072, Alfonso VI swore an oath in Santa Gadea church that he had played no part in the murder of his brother Sancho II of Castile — who had been killed at the siege of Zamora in suspicious circumstances. El Cid insisted on administering the oath himself, a humiliation the king never forgave. Historians debate the details, but Alfonso's subsequent treatment of El Cid — twice exiling him — suggests the grudge was real.