Ruins 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.
(February 2025)
(Foto: © Rüdiger Benninghaus)
#Burgen, #castles, #Burgruinen, #Burg_Blankenberg, #Architektur, #architecture, #Stadt_Blankenberg, #Hennef, #Sieg