An incredible mosaic floor in <a href="https://en.wikipedia.org/wiki/Chapel_of_Saint_Helena,_Jerusalem" class="extiw" title="en:Chapel of Saint Helena, Jerusalem">St Helen's Chapel</a>, a crypt built by the crusaders in the foundations of the original basilica.  Jerusalem.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/18118021@N00">Brian McElaney</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/18118021@N00/285742197">St Helena's Chapel</a>