East window in Carlisle Cathedral, one of the finest examples of Flowing Decorated Gothic tracery in England.  The glass of the tracery is Medieval and the lights is Victorian
<a href="//commons.wikimedia.org/wiki/User:Northernhenge" title="User:Northernhenge">Northernhenge</a>
<span class="int-own-work" lang="en">Own work</span>; this version sourced from Wikimedia Commons