Bosa - Duomo di Bosa

After the House of Malaspina started around 1200 to erect the castle, that still today towers over Bosa, people settled around it, as the place offered more security than the settlement that existed near the shore.
In 1308 James II of Aragon (aka "Jaume el Just", "Jaime II de Aragón") acquired castle and town and so could increase the Aragonese influence on the island.

Already within the 12th century the building of the Duomo di Bosa started, today a co-cathedral of the Diocese of Alghero-Bosa. The present building, with the two two cupolas, is the product of numerous restorations.