Apr-Sep: 9am-7pm; Mar and Oct: 9am-6pm; rest of year: 10am-4pm (5pm weekends)
Built in the 9C on the ruins of a 4C building, this Romanesque church with its solitary campanile has a splendid mosaic floor from the 4C, which is one of the most lavish examples of such a floor in the whole of western Christianity. The wooden framework and the arcades are from the 14C. The cripta degli Affreschi is home to superb Romanesque frescoes; and a second crypt, cripta degli Scavi contains excavated objects including some 4C mosaic slabs.
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