Rodelia's imperial castle (from the anime)

Chateau de Lezan Dou Crepuscule, (meaning 'Castle of the Twilight Grapes',) also called the Sunset Vineyard, is Rodelia's Imperial Castle. Princess Septieme and her siblings live there. The castle is like a bunch of grapes, having scattered towers. Inside those towers, the seven royal children live separated, each one plotting how to dominate and/or kill the others. They only meet during dinnertime, and they always bring a food taster.
Lodelia castle

Rodelia's imperial castle (from the manga)