Eastern watchtower of the ramparts of <a href="https://en.wikipedia.org/wiki/Echternach,_(Luxembourg)" class="extiw" title="en:Echternach, (Luxembourg)">Echternach, (Luxembourg)</a> (view south).
<a href="//commons.wikimedia.org/wiki/User:Palauenc05" title="User:Palauenc05">Palauenc05</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>