Canton Ticino or Ticino (Italian pronunciation: [tiˈtʃiːno]; German: Tessin [tɛˈsiːn]; see also in other languages) is the southernmost canton of Switzerland. Named after the Ticino river, it is the only canton in which Italian is the sole official language. Ticino borders the Canton of Uri to the north, Valais to the west (through the Novena Pass), Graubünden to the northeast, Italy's regions of Piedmont and Lombardy to the south and it surrounds the small Italian exclave of Campione d'Italia. Together with areas of the canton of Graubünden (Grigioni) it makes up the so-called Italian Switzerland.