Probably built in the 4th century as an early Christian church, to be adapted into a Romanesque style church and consecrated by Pope Alexander III. in the 12th century. It was last renovated in the 15th century. Ciborium above the main altar combines a variety of architectural styles, which is why the church has great significance. The front of the canteen is decorated with marble statue of St. Christopher with a child on his shoulders walking through water.
This church is a treasure trove of valuable paintings, various relics and reliquaries among which the most revered is the skull of St. Christopher, who saved the island and its inhabitants only to be guillotined.