Toad Hall and surrounding environs from Wind in the Willows. This lovely image of the map is accompanied by a thoughtful blog posts on books that contain maps, and their importance to the reading experience.
My earliest travels in an Imaginary Land were in Oz. I started with the film but was delighted to find one day that there was a book about Oz. Very different from the film but full of scenes and characters that were just astonishing.