Portogruaro (, ) is a town and comune in the Metropolitan City of Venice, Veneto, northern Italy. The city is the centre of a district, made up of 11 comuni, which form the Venezia Orientale with the San Donà di Piave district. History Portogruaro was officially founded in 1140, when the Archbishop of Concordia, Gervinus, gave a group of fishermen (Giovanni Venerio, Arpone, Bertaldo, Borigoio, Enrico Mosca, Giovanni Salimbene) the right to settle there and build a river port. A castle had existed on the site as early as the 10th century. In 1420, after centuries under Patria del Friuli, was conquered by the Republic of Venice. According to Bertolini the town's foundation could be coeval to the Concordia Sagittaria's one. Under the Venetians the town retained some autonomy and was able to expand economically up until the economic decline of Venice from the 17th century onwards. Following the upheavals of the Napoleonic Wars, Portogruaro was incorporated into the Austrian Empire in 1815. Apart from a brief uprising in 1848 Portogruaro remained under Austrian control until 1866 when it entered the newly unified Kingdom of Italy. Since that time the population of Portogruaro has grown from under 10,000 to around 25,000. Main sights Romanesque Abbey of Summaga (11th century). The church, built in 1211, has an 18th-century façade. The sacellum has frescoes from the 11th–12th centuries, depicting the Redemption, The Original Sin, The Punishment of Adam and Eve, the Crucifixion and the Final Judgement. The apse is also frescoed. Cathedral of Saint Andrea and Bell Tower Church of Saint Luis Church of Saint John Oratory of Visitation Town Hall, a Gothic building from 1265, with a façade including later additions (c. 1512). It houses three paintings by Luigi Russolo. Mills on the Lemene river (12th century) Church of Sant'Agnese (13th century) Communal Villa, a 16th-century patrician residence A series of 14th–15th-century palaces The Roman and medieval city of Concordia Sagittaria was located nearby. The Acco Super Bulldozer is located in Portogruaro as well. Economy A former large phosphates producer is now closed. The Camuffo Boatyard, founded in 1438, is one of the oldest industries in the world. Agriculture In the "frazioni" of Lison e Pradipozzo are produced several wines which are exported all around the world: Lison-Pramaggiore Merlot riserva Lison-Pramaggiore Cabernet riserva Lison-Pramaggiore Cabernet franc Lison-Pramaggiore Refosco dal peduncolo rosso Lison-Pramaggiore Verduzzo Lison-Pramaggiore Sauvignon Lison-Pramaggiore Chardonnay Lison-Pramaggiore Merlot Lison-Pramaggiore Cabernet