It was built in 1213 because the cathedral of the diocese, which was in the coastal village of Sant'Antioco, had become unsafe because of frequent raids by pirates. This church has beautiful white trackytic architecture.
Fu costruita nel 1213 perché la cattedrale della diocesi, che sorgeva a S. Antioco, sulla costa, era diventata insicura a causa delle frequenti incursioni dei pirati. Da allora mostra a tutti i visitatori la sua bella architettura in trachite bianca.