Troyes (50), a quaint old town of France, capital of the department of Aube, on the Seine, 100 m. SE. of Paris; possesses a fine Flamboyant Gothic cathedral, founded in 872, several handsome old churches, a large public library; has flourishing manufactures of textile fabrics, and trades in agricultural produce; here in 1420 was signed the Treaty of Troyes, making good the claims of Henry V. of England to the French crown.