Rüdiger BenninghausRuins of Blankenberg Castle near the village of Stadt Blankenberg (part of Hennef municipality/ Rhine-Sieg district). The castle was probably built between 1150 and 1180.<br> (February 2025)<br> (Foto: © Rüdiger Benninghaus)<br> <a href="https://pixelfed.social/discover/tags/Burgen?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Burgen</a>, <a href="https://pixelfed.social/discover/tags/castles?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#castles</a>, <a href="https://pixelfed.social/discover/tags/Burgruinen?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Burgruinen</a>, <a href="https://pixelfed.social/discover/tags/Burg_Blankenberg?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Burg_Blankenberg</a>, <a href="https://pixelfed.social/discover/tags/Architektur?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Architektur</a>, <a href="https://pixelfed.social/discover/tags/architecture?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#architecture</a>, <a href="https://pixelfed.social/discover/tags/Stadt_Blankenberg?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Stadt_Blankenberg</a>, <a href="https://pixelfed.social/discover/tags/Hennef?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Hennef</a>, <a href="https://pixelfed.social/discover/tags/Sieg?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sieg</a>