Valle d'Aosta is a vertical region, you might say, and not just in the physical sense, for the many high peaks that surround it (including Mont Blanc, the highest mountain in Europe at 4,807 meters). It also has a surprising concentration, in a region of such reduced dimensions, of so many natural splendors, of so many monuments, of so much precious historic and artistic heritage, of a density which evokes, in its vertical aspect, the crowding of skyscrapers in a metropolis where horizontal urban space is scarce and precious. This guide covers visits to the mountain region of Aosta Valley, with the description of several itineraries to visit the valley. The locations covered are the city of Aosta, the lower valley with its castles, a visit to Cogne and the Gran Paradiso Park, a visit to Morgex, La Thuille and the Piccolo San Bernardo Pass, one to Courmayeur, one to Valpelline and the Gran San Bernardo Pass, and all the villages of the Valtournance Valley.