Historical Entry:

From the 9th to the 11th centuries two basilicas were erected on the ruins of the old church, the first dedicated to Our Lady of the Assumption and the second to St. Just (San Giusto). The original design of the latter building was subsequently lengthened. In the 14th century the two basilicas were joined by means of the demolition of one nave of either basilica and the construction of a simple asymmetrical façade, dominated by a delicately-worked Gothic rosette, as ornate as the new bell-tower, using the Romanesque stones found on the site and friezes of arms.
Among the works of historical interest in the basilica are the apsidal mosaics depicting Our Lady of the Assumption and San Giusto, laid by master craftsmen from Veneto in the 12th-13th centuries. The small 14th-century church of San Giovanni (the old baptistry) on the left and San Michele al Carnale on the right, by the entrance to the Museum, complete a fine Medieval churchyard.