Piedmont is located in the northwestern part of the country and is the second largest Italian region. The territory is mostly mountainous (43%), followed by hills (30%) and plains (27%) respectively.
The Alps reach 4,634 meters with Monte Rosa, located on the border with Valle d'Aosta and Switzerland, where the peak with the maximum height is located; the Gran Paradiso follows (4,061 m.), which also slightly culminates outside the region. In Piedmont the longest Italian river, the Po, is born, and some of its initial tributaries flow, such as Tanaro, Ticino and Dora Baltea. On the border with Lombardy is Lake Maggiore, the second largest in Italy.