Die Genovevaburg in Mayen
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/strobelix/">Chris Strobel</a>
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/strobelix/3316255060/">https://www.flickr.com/photos/strobelix/3316255060/</a>