Furrowed by the Olona River, this valley extends from Varese to the Lombard plain. Route of transit tothe Rezia, bulwark against the barbarians' invasions, war zone between Milanesi and Comaschi, it was one of the most important area of Italian industrial development.

It spreads from Varese to the Lake Lugano. In the past, it was bear hunting land. Besano is seat of the Museo dei Fossili. Viggiù was native of the famous picasass. In Bisuschio, there is Villa Cicogna Mozzoni, one of the most beautiful Reinassance residences of Lombardy.

Lived since the Mesolithic, it was route of transit to Switzerland and the alpine passes in the Roman and Medieval times. The valley was occupied by a glacier during the last glacial era and the remainings are the small lakes of Ganna and Ghirla.

It's the natural continuation of the Valganna Valley towards the Lake Lugano. The ground is flat with wide lawns surrounded by a basin of hills. As ancient holyday place, there are some important 19th century villas with luxuriant gardens.

It's the wide valley, covered by woods of chestnuts and beeches, which stretches between the Campo dei Fiori, the Monte Nudo and the Monte Colonna and leads to Laveno, on Lake Maggiore. In Casalzuigno you have to visit Villa Della Porta Bozzolo and the painted village of Arcumeggia.

Extended between Luino and the Valcuvia Valley, is the natural continuation of this one. It's crossed by the Margorabbia Brook.

This small valley takes name from the town Dumenza. It's furrowed by Colmegnino Brook and climbes up Monte Lema, with its splendid view on Lake Maggiore.

It's the wildest valley of the whole province. Furrowed by the Giona Brook, which flows into the Lake Maggiore in Maccagno, is inhabited only on its right side. The only village on the left is Curiglia con Monteviasco that is reachabled from Luino.