This is what we found on Wikipedia regarding the The Lion the Witch and the Wardrobe:

The Lion, the Witch and the Wardrobe is a portal fantasy novel written by British author C. S. Lewis, published by Geoffrey Bles in 1950. It is the first published and best known of seven novels in The Chronicles of Narnia (1950–1956). Among all the author's books, it is also the most widely held in libraries. It was the first of The Chronicles of Narnia to be written and published, but is marked as volume two in recent editions that are sequenced according the stories' internal chronology. Like the other Chronicles, it was illustrated by Pauline Baynes, and her work has been retained in many later editions.

Most of the novel is set in Narnia, a land of talking animals and mythical creatures that is ruled by the evil White Witch. In the frame story, four English children are relocated to a large, old country house following a wartime evacuation. The youngest, Lucy, visits Narnia three times via the magic of a wardrobe in a spare room. Lucy's three siblings are with her on her third visit to Narnia. In Narnia, the siblings seem fit to fulfil an old prophecy and find themselves adventuring to save Narnia and their own lives. The lion Aslan gives his life to save one of the children; he later rises from the dead, vanquishes the White Witch, and crowns the children Kings and Queens of Narnia.

Lewis wrote the book for (and dedicated it to) his goddaughter, Lucy Barfield. She was the daughter of Owen Barfield, Lewis's friend, teacher, adviser and trustee. In 2003, The Lion, the Witch and the Wardrobe was ranked ninth on the BBC's The Big Read poll. Time magazine included the novel in its list of the 100 Best Young-Adult Books of All Time, as well as its list of the 100 best English-language novels published since 1923.