Where can i find a cathedral/castle cake design?

were going for a Vlad the impaler type castle or cathedral look but keep finding small cheesy kiddie looks... Were to be married in a gothic romance ceremony next halloween. We are pagan/wiccan and mixing my romanian and his chinese cultures with our own gothic/emo look... We've covered my Mina Harker replica gown and candles for the bridesmaids and candlelabras along with organ music, black lights and fog machines but the cake is discouraging... HELP HELP HELP