Valle d'Aosta - a valley and autonomous region of Italy, is a special place on the world map. The Alps here, in the Mont Blanc - Monte Rosa - Gran Paradiso triangle, reach the greatest height, but here is the "thinnest" place of the Alpine arc; to cross all the Alps here it is enough to cross only one pass. Therefore, the city of Aosta, the capital of the region, which gave it its name, has always been a strategically important place, which is why this region is distinguished by a colossal number and variety of monuments of all eras and cultures. There are about 120 castles, and this is along 100 kilometers of the valley, from Mont Blanc to the Padan plain. A tour of the castles of Valle d'Aosta is what the electric bike was made for.