The 'His Dark Materials' trilogy is also a great option. It has a complex and fascinating world with daemons, different realms, and a story of a young girl's journey to uncover the truth about her world and fight against the oppressive forces. It's full of deep themes, adventure and unique characters.
There are many great alternatives. For example, the 'Narnia' series. It takes readers into a magical land full of talking animals, mythical creatures and epic battles between good and evil. It's a story of adventure, friendship and self - discovery.