Land of Ingary Trilogy Howl's Moving Castle Complete Series 3 Books Collection Set:

Howl's Moving Castle: Deciding she has nothing more to lose, Sophie makes her way to the moving castle that hovers on the hills above her town, Market Chipping. But the castle belongs to the dreaded Wizard Howl, whose appetite, they say, is satisfied only by the souls of young girls...There Sophie meets Michael, Howl's apprentice, and Calcifer the fire demon, with whom she agrees to a pact. Her entanglements de Ella with Calcifer, Howl, and Michael and her quest to break her curse de Ella come alive with Diana Wynne Jones's unique combination of magic, humor, and imagination.

Castle in the Air: Far to the south in the Land of Ingary, lives a young carpet merchant called Abdullah. In his dreams of him, he is the long-lost son of a great prince. This dream is a complete castle in the air... or is it? Abdullah's daydreams suddenly start to come true when he meets the exquisite Flower-in-the-Night, daughter of the ferocious Sultan of Zanzib. Fate has destined them for each other, but a bad-tempered genie, a hideous djinn, and various villainous bandits have their own ideas. When Flower-in-the-Night is carried off, Abdullah is determined to rescue her - if he can find her.

House of Many Ways: A chaotically magical sequel to Howl's Moving Castle. Charmain Baker is in over her head. Looking after Great Uncle William's tiny cottage while he's ill should have been easy, but Great Uncle William is better known as the Royal Wizard Norland and his house de el bends space and time. Its single door leads to any number of places - the bedrooms, the kitchen, the caves under the mountains, the past, to name but a few.