Vilain's nickname was "Geeraard de Duivel" ("Geerard the Devil"), which was based on his dark complexion and hair color.
Over the course of centuries, it was used for various functions; gatherings of knights, as an armory, a monastery, a school, the seminary for the diocese of Ghent, an insane asylum and a prison.
Near the end of the 19th century, it was bought by the Belgian state to serve as a national archive.
Due to the numerous restorations, the building has changed a lot since the Middle Ages.
[6] It's a central location in Jan Bucquoy's comic book album Gerard de Duivel, written by Bucquoy and drawn by Tito (Tiburcio de la Llave).