Itinério is a downloadable application for smartphone or tablet which allows for an interactive visit of the Chamonix valley. A visit which is original and allows for discovery along guided gps tours. Using a unique cultural database on the geography and history of our valley, Itinério addresses several themes such as Man and the Mont Blanc; water in all its forms; agro-pastoralism and the forest; wildlife, plant life and biodiversity; geology, stones and crystals.... Itinerio scenarizes our territory with an incredible richness of content and associates texts and interview with specialists, sounds and illustrations, pictures and videos, schemes and maps, animations and games, augmented reality and 3d images. Itinério also showcases what the valley's professionals have to offer (catering, nature and heritage services, local products etc.) Itinério is the most important interactive project concerning a natural environment currently unfolding in France.