In Iglesias, the Cathedral of Santa Chiara stands as a monument of extraordinary historical and architectural importance. Its construction, which took place between 1284 and 1288, was commissioned by Count Ugolino della Gherardesca, a figure made famous by Dante Alighieri in the Divine Comedy. This cathedral is notable for being one of the rare churches dedicated to St. Clare of Assisi, canonised in 1255. The original Romanesque façade features an architraved portal in the first order and an oculus flanked by two Gothic windows in the second, culminating in a series of Gothic arches. In 1503, at the behest of Pope Julius II, the building was elevated to the rank of cathedral, welcoming the cult of Saint Antiochus, patron saint of the diocese. This transition led to significant changes in the Gothic style in the 16th century. The 17th century saw a further strengthening of the cult of St Antiochus, following the discovery of his remains, now housed in a domed chapel to the left of the high altar.