Most visitors who drive in France have relied on the trusty Michelin Local series ("yellow") maps for years, and they're great. But in recent years Michelin has published larger-scale maps for several of the more-visited areas. The Loire Valley is one such area. If you're visiting an area for which the Zoom map is available, get it for greater detail and also get the local-series maps for a slightly wider-area view. The amount of detail on the Zoom maps is just tremendous, and they're a bit easier to read in the car than the local series, too. Get the Michelin maps even if you have GPS or nav in the car, because they show so much more detail, like terrain and points of interest. All Michelin maps are quite good; the Zoom series even more useful. If you use a Zoom map on a trip, you'll wish Michelin published a Zoom map for every area.