KOSZEG (Ger. Guns)  , a town in the county of Vas, in Hungary, 173 M . W. of Budapest by rail . Pop . (1900), 7422 . It is pleasantly situated in the valley of the Guns, and is dominated towards the west by the peaks of Altenhaus (2000 ft.) and of the Geschriebene Stein (2900 ft.) . It possesses a castle of Count Esterhazy, a modern Roman Catholic Church in Gothic style and two convents . It has important cloth factories and a lively trade in fruit and wine . The town has a special historical interest for the heroic and successful defence of the fortress by Nicolas Jurisics against a large army of Sultan Soliman, in July–August 1532, which frustrated the advance of the Turks to Vienna for that year . To the south-east of Koszeg, at the confluence of the Guns with the Raab, is situated the town of Sarvar (pop . 3158), formerly fortified, where in 1526 the first printing press in Hungary was established .