The Diocese of Sulci was an episcopal seat as early as the seventh century.
After its decline the bishop of Sulci took up his residence at the village of Tratalias; in 1503 the seat was officially moved to Iglesias but in 1514 the Diocese was reunited with the Archdiocese of Cagliari
In 1763 the see was re-established, and Luigi Satta appointed bishop.

The cathedral of Iglesias (then Villa di Chiesa) was erected by the Pisans in 1285, but has been restored in later times.
The previous cathedral located in Tratalias was built in a Pisan-Romanesque style between 1213 and 1282.
The Diocese of Sulci was an episcopal seat as early as the seventh century. After its decline the bishop of Sulci took up his residence at the village of Tratalias; in 1503 the seat was officially moved to Iglesias but in 1514 the Diocese was reunited with the Archdiocese of Cagliari
In 1763 the see was re-established, and Luigi Satta appointed bishop. 
The cathedral of Iglesias (then Villa di Chiesa) was erected by the Pisans in 1285, but has been restored in later times. The previous cathedral located in Tratalias was built in a Pisan-Romanesque style between 1213 and 1282.
Roman Catholic Diocese of Iglesias