Grenzau Castle
Germany · Europe
About
Grenzau Castle (German: Burg Grenzau) is a ruined spur castle at 250 m above sea level (NN) near Höhr-Grenzhausen in the county of Westerwaldkreis in the state of Rhineland-Palatinate. It is the only castle in Germany with a triangular bergfried.
Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.