Tourism-related activities represent the main source of income for Valle d'Aosta. Apart from the town of Aosta, the largest tourist areas practically coincide with the famous side valleys, here listed in clockwise order for those coming from the Po Valley. The Lys (or Gressoney) valley conserves a typically alpine appearance: the two main resorts, Gressoney-St-Jean and Gressoney-La-Trinité are equipped for summer tourism (excursions into the Mount Rosa group) and winter (the Monterosaski, ski network with Alagna Valsesia and Champoluc)
