THE NEVERENDING STORY by Michael Ende is a classic fantasy adventure.

Small and insignificant Bastian Balthazar Bux is nobody's idea of a hero, least of all his own. Through the pages of an old book he discovers a mysterious world of enchantment - but a world that is falling into decay. The great task of making things well again falls on Bastian and so begins a dazzling, magical adventure.
 
Age 9+
 
'A rich, enjoyable read...drawing in the most potent elements of fairytale, myth, and invented fantasy' Observer