Hohenzollern Castle
Hohenzollern Castle (German: ) is the ancestral seat of the imperial House of Hohenzollern. The third of three hilltop castles on the site, it is located atop Mount Hohenzollern, above and south of Hechingen, on the edge of the Swabian Jura of central Baden-Württemberg, Germany.
Grenzau Castle
Grenzau Castle () is a ruined spur castle at 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.