The Gormenghast Trilogy

Gormenghast is the vast, crumbling castle to which Titus Groan, is lord and heir. Titus is expected to rule this gothic labyrinth of turrets and dungeons, and his subjects, according to age-old rituals, but things are changing in the castle. He must contend with treachery, manipulation and murder and his longing for a life beyond the castle walls.