Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.
The Po (Padus and Eridanus; Po; ancient Ligurian: Bodincus or Bodencus; Πάδος, Ἠριδανός) is a river that flows eastward across northern Italy.
The province of Pavia (Provincia di Pavia) is a province in the region of Lombardy in northern Italy; its capital is Pavia.
The Tanaro, known as Tanarus in ancient times and Tane or Tani in piedmontese language, is a long river in northwestern Italy.
The Versa, a left tributary of the Tanaro, is a torrent in the Province of Asti in north-west Italy.