I've always been vaguely dissatisfied with the maps of Westeros that have appeared in A Song of Ice and Fire so far. The CAD line-drawings in the earlier books were not great, although the new, illustrated one that appeared in A Storm of Swords was nice. The full-colour map in Guardians of Order's 2005 roleplaying game was excellent, but it missed quite a few locations and was therefore incomplete. The map created by Ran over at Westeros.org in the Citadel subsection is excellent and the most up-to-date map out there, but compared to the many excellent maps of Middle-earth, the Discworld and Robert Jordan's 'Randland' out there, Westeros still felt under-represented.
This map (second-to-last on the right), created by Cartographer's Guild member 'Tear', is now probably the finest map of the continent to appear to date. So if you ever wondered where the Dornish prison-island of Ghaston Grey is located or how far Sam travelled in A Feast for Crows, now you know.