An interesting case study of how maps can generate a very realistic atmosphere within a fantastical world. The use of scale, direction, denoting mountain ranges and other sleight topography, as well as annotation all help add to the realism of this fantastic dream-made world.
Image from: http://www.majorindependence.com/map-of-middle-earth-lotr/map-of-middle-earth-lotr-10-middle-earth-map-lord-the-rings/