ATRI, Abruzzi, Italy, province of Teramo, 18m. W. of Teramo station on the railway from Ancona to Foggia, and 18m. due E.S.E. of Teramo, on the site of the ancient Hadria (q.v.) . Pop. (1931), 10,366 (town) ; 14,202 (commune). Its Romanesque Gothic cathedral (1285-1305) is remarkably fine, though the in terior was spoilt by restoration in 1657. The crypt was originally a Roman cistern. The palace of the Acquaviva family, dukes of Atri from the 14th century to 1775, stands on the principal square.