Painted ceiling of the University Library of Coimbra, Portugal
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/20013462@N05">PhR61</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/20013462@N05/2122268696/">Portugal 2000 0073</a>