Jülich (; in old spellings also known as Guelich or Gülich, , , Ripuarian: Jöllesch) is a town in the district of Düren, in the federal state of North Rhine-Westphalia, Germany. As a border region between the competing powers in the Lower Rhine and Meuse areas, the town and the Duchy of Jülich played a historic role from the Middle Ages up to the 17th century. Geography Jülich stands in the Rur valley on the banks of the river Rur. The town is bordered by the town of Linnich in the north, the municipality of Titz in the northeast, the municipality of Niederzier in the southeast, the municipality of Inden in the south, and by the municipality of Aldenhoven in the west. Its maximum size is 13.3 km from east to west and 10.9 km from north to south. The highest point in Jülich is in Bourheim, 110 m above sea level (excepting Sophienhöhe, an extensive artificial mountain made up of overburden from a nearby open-pit lignite mine, the Tagebau Hambach). The lowest point, 70 m above sea level, lies in the borough of . Climate Köppen-Geiger climate classification system classifies its climate as oceanic (Cfb). Boroughs The town of Jülich comprises 16 boroughs: Town centre Altenburg Bourheim Broich Daubenrath Güsten Kirchberg Koslar Lich-Steinstraß Mersch Merzenhausen Pattern Selgersdorf Stetternich Welldorf (including Serrest) History Jülich is first mentioned in Roman times as Juliacum along an important road through the Rur valley. Fortified during the late Roman period, it was taken over by the Franks and grew to be the centre of a county which became the nucleus of a regional power. The counts and dukes of Jülich extended their influence during the Middle Ages and granted Jülich city status in 1234 (Count Wilhelm IV). During battles with the Archbishop of Cologne, Jülich was destroyed in 1239 and again in 1278. In 1416, the city was granted fiscal independence by Duke Rainald of Jülich-Geldern. Following a fire in 1547, the city was rebuilt as an ideal city in the Renaissance style under the direction of the architect Alessandro Pasqualini. The citadel of Jülich was later visited by the French military engineer Sébastien le Prestre de Vauban and was rated exemplary. After the ducal family line was extinguished in 1609, the Duchy of Jülich was divided in the War of the Jülich Succession; as part of that war, the fortress at Jülich was