<a href="https://en.wikipedia.org/wiki/Cathedral_of_Trier" class="extiw" title="en:Cathedral of Trier">Cathedral of Trier</a>, western apse
<a href="//commons.wikimedia.org/wiki/User:Gun_Powder_Ma" title="User:Gun Powder Ma">Gun Powder Ma</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>