Ravenna, Emilia-Romagna - Basilica di San Vitale
Ingo Mehling
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/193009646@N08/51691377038/">https://www.flickr.com/photos/193009646@N08/51691377038/</a>