Part of St. Paul's Catacombs, the part accessible from the Parish tradition and as recorded in the Bible, St. Paul stayed here for three months when he was shipwrecked on the island in AD 60.

In the Catacombs of St Agatha's, there are over 500 graves of several types, the majority being children's graves. There are sections for pagans and Jews, as well as for Christians. There are also unique frescoes. Another feature