Osnabrück (; ; archaic ) is a city in the federal state of Lower-Saxony in north-west Germany. It is situated in a valley penned between the Wiehen Hills and the northern tip of the Teutoburg Forest. With a population of around 160,000, Osnabrück is the fourth-largest city in Lower Saxony. The city is the centrepoint of the Osnabrück Land region as well as the District of Osnabrück.