CONCORDIA (mod. CONCORDIA SAGITTARIA), an ancient town of Venetia, in Italy, i6ft. above sea-level, 31 m. W. of Aquileia, at the junction of roads to Altinum and Patavium, to Opitergium (and thence either to Vicetia and Verona, or Feltria and Tridentum), to Noricum by the valley of the Tilaventus (Tag liamento), and to Aquileia. Previously a mere village, Augustus made it a colony. Under the later empire it was one of the most important towns of Italy; it had a strong garrison and a factory of missiles for the army. In the garrison cemetery many impor tant inscriptions have been discovered. It was taken and destroyed by Attila in A.D. 452. Parts of the ancient city walls, the sites of the forum and the theatre, and probably that of the arms factory have been found. The ancient see of Concordia was transferred in 1339 to Portogruaro, where it still remains. The old Roman esque cathedral and baptistery are preserved.