Along with Skenfrith and White Castle, it’s one of the ‘Three Castles of Gwent’ built by the Normans to control a key section of troublesome border country.
Ynghyd ag Ynysgynwraidd a’r Castell Gwyn, mae’n un o ‘Dri Chastell Gwent’ a adeiladwyd gan y Normaniaid i reoli rhan allweddol o ffindir trwblus.