Ravenna, Italy. Roman-catholic church San Vitale. Vault over the main altar.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/23336697@N00">Maarten</a>
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<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/23336697@N00/41718909">Basilica de San Vitale (1)</a>