Entrance to the Kaiser-Wilhelm-Turm on the Hohloh west of <a href="https://en.wikipedia.org/wiki/Gernsbach" class="extiw" title="en:Gernsbach">Kaltenbronn</a> in northern <a href="https://en.wikipedia.org/wiki/Black_Forest" class="extiw" title="en:Black Forest">Black Forest</a> in Germany.
<a href="//commons.wikimedia.org/wiki/User:Harke" title="User:Harke">Harke</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>