Empoli (Italian pronunciation: [ˈempoli]) is a town and comune in Tuscany, Italy, about 20 kilometres (12 mi) southwest of Florence, to the south of the Arno in a plain formed by this river. The plain has been usable for agriculture since Roman times. The commune's territory becomes a hilly one as it departs from the river. Empoli is on the main railway line from Florence to Pisa, and is the point of divergence of a line to Siena.Empoli has an enduring tradition as an agricultural centre.