Piacenza (Latin, Placentia), capital of the province of the same name, is an Italian town, situate on the right bank of the Po, near its confluence with the Trebbia, in a fertile plain half-way between Parma and Milan. It is now, as it was of old, of military importance. The chief buildings are the cathedral of the 13th and following centuries, the 13th-century town-hall, the Palazzo Farnese, and some fine churches containing good paintings. Chief industries are the manufacture of woollens, cottons, stockings, hats, leather, silks-pinning, paper-making. Gregory X. was born here.