The Chronicles of Narnia: The Lion, the Witch and the Wardrobe make a faithful adaptation of the novel set in Britain. ""Harry Potter" came along, and all those cultural or geographical lines were broken," Mark Johnson explained. "When "The Lion, The Witch and the Wardrobe" was being developed at Paramount, the imperative was to set it in the U.S., and it just doesn't hold. [...] It's not the book." Guillermo del Toro turned down the offer to direct due to his commitment on "Pan's Labyrinth". Following an Academy Award win for "Shrek", director Andrew Adamson began adapting the source material with a 20-page treatment based on his memories of the book.
The Chronicles of Narnia book: Lewis's interest in the literary symbolism of medieval and Renaissance astrology is more overtly referenced in other works such as his study of medieval cosmology "The Discarded Image", and in his early poetry as well as in "Space Trilogy". Narnia scholar Paul F. Ford finds Ward's assertion that Lewis intended "The Chronicles" to be an embodiment of medieval astrology implausible, though Ford addresses an earlier (2003) version of Ward's thesis (also called "Planet Narnia", published in the "Times Literary Supplement"). Ford argues that Lewis did not start with a coherent plan for the books, but Ward's book answers this