From StreetView to the new mapping tool, Cartographer, get a glimpse of how GoogleMaps works
Google Maps Blog: “With Google Maps by your side, you have a co-pilot for everything from turn-by-turn directions, to discovering new restaurants to deciding which hiking trails to climb next. This is possible in large part because Google Maps includes information from thousands of authoritative sources as varied as the U.S. Geological Survey, the Ordnance Survey of …