Osnabrück (.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}German: [ɔsnaˈbʁʏk] ⓘ; Westphalian: Ossenbrügge; archaic English: Osnaburg) is a city in Lower Saxony in western Germany. It is situated on the river Hase in a valley penned between the Wiehen Hills and the northern tip of the Teutoburg Forest. With a population of 168,145[3] Osnabrück is one of the four largest cities in Lower Saxony.[4] The city is the centrepoint of the Osnabrück Land region as well as the District of Osnabrück.[5] The founding of Osnabrück was linked to its positioning on important European trading routes. Charlemagne founded the Diocese of Osnabrück in 780. The city was also a member of the Hanseatic League. At the end of the Thirty Years' War (1618–1648), one of the treaties comprising the Peace of Westphalia was negotiated in Osnabrück (the other being in nearby Münster).[6] In recognition of its role as the site of negotiations, Osnabrück later adopted the title Friedensstadt ("city of peace"). The city is also known as the birthplace of anti-war novelist Erich-Maria Remarque, painter Felix Nussbaum and current chancellor of Germany Olaf Scholz.