It's a making Mojaic. If you need to choose from all the places this is the one to choose. Also visit the little museum in the same place.
As a symbol of the Archiepiscopal Chancellery of Ravenna, San Vitale...
As a symbol of the Archiepiscopal Chancellery of Ravenna, San Vitale is one of the greatest works of late Roman art. Famous for its mosaics commissioned by Archbishop Maximian (546/556 AD), the basilica is a place of contemplation. While the body descends its steps the spirit rises to the Truth. A masterpiece to be admired for its evident beauty and its hidden, precise, evocative theological argument.