You don't have to have a strong religious faith to enjoy the serene atmosphere of Carrara Cathedral. Ask when the next mass starts or when it's open for general viewing.
This principal church is situated in Carrara, a place that has so much on offer! Marmo di Carrara, Malaspina Castle, and Castello Malaspina di Fosdinovo are other interesting sightseeing options nearby when you've finished up at Carrara Cathedral.