Segment of the Great Wall<br>greatwall3
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/48600108001@N01">Jacob Ehnmark</a> from Sendai, Japan
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/48600108001@N01/2674555">Flickr</a>