Home to King Charles III de la Tête d'Or and his court, the somptuous palace of Oisillon situated 30 leagues to the north-west of Guisoreux is the heart of the corrupt Kingdom. Most of the important decisions are taken here before being passed along to the provinces and central government in Guisoreux.

There are rooms almost beyond count within the main complex, ranging from apartments and ball rooms decked out by the very best artists and craftsmen the Old World has to offer, down to the drear and functional servants quarters. Dazzling parties and other extravagant entertainments taking place on a daily basis ensure the notion of Bretonnian grandeur is not lost on the many ambassadors and guests who visit the palace.