BAR-SUR-SEINE, a town of France, department of Aube, on the left bank of the Seine, 2om. S.E. of Troyes by the Eastern railway. Pop. (1931) 2,409. The town lies under a hill crowned by ruins of the castle of the counts of Bar, and consists chiefly of one long street. Devastated in 1359 by the English, when, according to Froissart, no fewer than goo mansions were burnt, it also suffered greatly in the religious wars of the 16th century. The church of St. Etienne of the r 6th and 17th centuries contains some fine stained glass. Bar-sur-Seine has a tribunal of first instance. Wood-sawing is carried on, and there is trade in wine and wood, and in the products of paper-mills and tanneries. The Canal de la Haute-Seine begins here.