Located a few kilometers from the Adriatic Sea, in the heart of Romagna, Ravenna is famous for its stunning mosaics, dating back between the 5th and the 6th century AD, such as those in the octagonal Basilica of San Vitale, octagonal Neonian Baptistery, the Basilica of Sant’Apollinare Nuovo, Octagonal Arian Baptistery, Basilica of San Francesco and Mausoleum of Galla Placidia.