This Master's degree thesis about the "Regional, urban and landscape-environmental planning" of the Polytechnic of Turin, aims to provide the reader with different elements of documentation and reflection, and which is able to make an accurate picture of the complex reality of the territorial government in the Highlands, strongly characterized by its peculiarities from the physical and geographical point of view and, consequently, areas of reflection and political action. Territories like the Autonomous Region of Aosta Valley, the Autonomous Province of Bolzano and Autonomous Province of Trento, fully reflect this identikit. In addition to these three case studies, the Piedmont Highlands have been analyzed, in particular the bordering Aosta Valley Provinces, given the will to compare mountain territories in special and ordinary statute.