
1) Castle on the Moselle
Found on
https://www.crosswordclues.com/clue/grevenburg

Grevenburg was a castle in Traben-Trarbach in the federal state of Rhineland-Palatinate in Germany. The castle was formerly the residence of the Rear County of Sponheim and today is a ruin following its destruction by the French in 1734. == History == The castle was built in 1350 by Count Johann III of Sponheim-Starkenburg and replaced Castle Star...
Found on
http://en.wikipedia.org/wiki/Grevenburg
No exact match found.