Hardegg Castle in the March of Austria was first mentioned in an 1145 deed, it was acquired by the Counts of Plain about 1187.
Burg bei Magdeburg | Teodor von Burg | Hardegg | Den Burg | Burg Ottenstein | Burg Gutenfels | Burg | Elizabeta Burg | Burg Kreuzenstein | Burg Hardegg | Burg Ebernburg | ''Burg Drachenfels'', and in the background ''Wolkenburg'' on an engraving |