Stelvio National Park is a national park in the north-east of Italy, founded in 1935. The park is the largest in Italy and covers part of two regions: Trentino-Alto Adige/Südtirol and Lombardia, in 24 municipalities. Stelvio National Park has borders with the Swiss National Park, the Parco naturale provinciale dell'Adamello-Brenta and the Parco regionale dell'Adamello. Together, these parks comprise 400,000 hectares of protected natural environment.