Osterode am Harz, often simply called Osterode, is a town in south-eastern Lower Saxony in central Germany on the south-western edg…Osterode am Harz, often simply called Osterode, is a town in south-eastern Lower Saxony in central Germany on the south-western edge of the Harz mountains. It was the seat of government of the district of Osterode. Osterode is located on the German Timber-Frame Road.