The Cathedral of Cartagena is located on the hill of La Concepción in the old town of Cartagena. It has been in ruins since 1939, when it was destroyed when Cartagena was shelled in the Spanish Civil War by Nationalist forces.
Cartagena had a see before the Muslim conquest of Spain, but no trace of the pre-conquest cathedral has been found yet. In 1243 Alfonso X of Castile launched a campaign to reconquer the Kingdom of Murcia, and petitioned Pope Innocent IV to restore the Diocese of Cartagena. In 1250 the Pope issued the bull 'Spiritus exultante' restoring the diocese. The first bishop of the new phase of the Diocese was the Franciscan friar Pedro Gallego, Alfonso's confessor.
There is inconclusive evidence whether there was a cathedral in Cartagena at that time. In medieval and Renaissance documents the church is described as Iglesia Mayor, and is only called 'Old Cathedral' from the eighteenth century.
García Martínez, the second bishop of the diocese, decided with the consent of King Sancho IV to transfer the see to Murcia, although retaining the name of Diocese of Cartagena. The church therefore lost its status of a cathedral, and became a parish church.
Throughout the centuries, there were continuing demands to the Vatican for the restitution of the bishopric to Cartagena. The church of Santa María de Gracia, with the shape and dimensions of a cathedral, was built in the 18th century on a different site, with the aim of becoming the seat of the diocese in place of the original church.
In the late nineteenth century the foundations of the medieval church collapsed. The church was restored by the architect Victor Beltrí, in Romanesque style with modernist elements.
During the Spanish Civil War the church was attacked and the contents damaged on 25 July 1936. In 1939 it was bombed and has remained abandoned since then.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.