The architects principally responsible for its construction were a Frenchman named Enrique (who also worked on Leon Cathedral) in the 13th century and a German named John of Cologne (Juan de Colonia) in the 15th century. The latter was discovered and hired by the bishop of Burgos while attending the Council of Constance in 1417.In 1919 the cathedral became the burial place of Rodrigo Díaz de Vivar ("El Cid"), and his wife Doña Jimena. On October 31, 1984, Burgos Cathedral was designated a World Heritage Site by UNESCO.