Aquileia, small town on the Isonzo river delta, Friaul/Friuli (Italy). The Roman colony, founded in 181 B.C., became a base for the development and conquest of the Danube region. Seat of a bishop from the 3rd century onward, then of the patriarch with a large diocese. The River Drau/Drava was designated as the border to the Archdiocese of Salzburg in 811. In 976 Aquileia became part of Carinthia, then part of Goerz (now Gorizia); later part of Austria (1500-1809 and 1814-1918).