
Alto Adige (Trentino-Alto Adige) is an autonomous region in Northern Italy. It consists of two provinces: Trento and Bolzano-Bozen. The region was part of Austria-Hungary from 1389 until its annexation by Italy in 1919. Together with the Austrian state of Tyrol it is represented by the Euroregion Tyrol-South Tyrol-Trentino. In English, the region is also known as Trentino-South Tyrol or by its Italian name Trentino-Alto Adige.
The region is bordered by Tyrol (Austria) to the north, by Graubünden (Switzerland) to the north-west and by the Italian regions of Lombardy and Veneto to the west and south, respectively. It covers 13,607 km². It is extremely mountainous, covering a large part of the Dolomites and the southern Alps.