Aosta is the principal city of Aosta Valley, a bilingual region in the Italian Alps, 110 km north-northwest of Turin. It is situated near the Italian entrance of the Mont Blanc Tunnel, at the confluence of the Buthier and the Doire baltée, and at the junction of the Great and Little St. Bernard routes. Aosta is not the capital of the province, because Aosta Valley is the only Italian region not divided into provinces.