Ravenna is located about 40 km north from Bellaria and it’s the largest city of Romagna. Ravenna has an enviable history , was three times the capital of the Roman Empire ( 402-476 ), the Kingdom of the Ostrogoths ( 493-553 ) and of the Byzantine ( 568-751 ) . For its bright past , the complex of the early Christian monuments of Ravenna was declared World Heritage by UNESCO : the Mausoleum of Galla Placidia , Battistero Neoniano, Cappella Arcivescovile, Basilica of Sant 'Apollinare Nuovo , Mausoleum of Theodorico, Basilica of San Vitale , Basilica of St. Apollinare in Classe.