The Norman keep of Portchester Castle
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/20921249@N02">Rob Nunn</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/20921249@N02/2389000831/">Portchester Castle 3</a>