Although the cathedral of San Giusto was founded in the 5C, the present buildings date back largely to the 14C, when the two earlier basilicas were connected by a central nave. Its façade is decorated with a beautiful rose window and a bas-relief and is dominated by a sturdy bell tower decorated with Roman columns taken from an old temple and a statue of San Giusto. Inside the church, note the beautiful mosaics dating from the 12C.