sentences:  After 1640, the estate was inherited by Dénes Bánffy (II) (1638–1674), county governor of Doboka and Kolozs counties, brother-in-law and counselor of Prince Michael I Apafi, who fortified the initial building between 1668 and 1674 by surrounding it with curtain walls that formed a rectangular enclosure, reinforced at the corners with massive circular towers.The castle could be accessed through a seven-storey high gatehouse located on the fortification's eastern side.The works were continued after his death by his successor, György Bánffy (III).