Sankt Andreasberg Observatory

The Jordanshöhe is a mountain, roughly 723 m above sea level (NHN), in the Harz in central Germany. It lies north of the town of Sankt Andreasberg in the district of Goslar in Lower Saxony. To the west is the Kuppe. On the mountain there is the Jordanshöhe youth hostel and the Jordanshöhe nature trail (Gesteinskundlichen Lehrpfad Jordanshöhe).

At 893 metres (2,930 feet) above sea level, the Rehberg in the Harz mountains is the fourth highest mountain in the German state of Lower Saxony, and the fifth-highest in the Harz.

The Kuppe is a mountain in the Harz that lies north of Sankt Andreasberg in the district of Goslar in the German state of Lower Saxony. It is 729.1 metres high and is connected to the Jordanshöhe in the west.

The Roter Bär Pit (German: Grube Roter Bär) in Sankt Andreasberg in the Upper Harz is an iron ore mine that was worked from about 1800 until the 1860s. Today it is operated as a show mine under the name of Roter Bär Pit Educational Mine by the Sankt Andreasberg Society for History and Archaeology (Sankt Andreasberger Verein für Geschichte und Altertumskunde). The name Roter Bär means "Red Bear". In line with historical practice the funds required to restore the historic mine were raised through the formation of a mining trades union and issue of share certificates.

The Samson Pit or Samson Mine (German: Grube Samson) is an historic silver mine in Sankt Andreasberg in the Upper Harz region of central Germany.The pit has one of the oldest man engines in the world still working and it can be seen in operation during guided tours. The man engine, installed in the Samson Pit in 1837, used to be driven by the water power of the Rehberg Ditch (Rehberger Graben). The start of this ditch is the Oderteich reservoir, which is part of the Upper Harz Water Regale. The large water wheel (with a 12 m diameter), which drove the man engine until 1922, is only powered by water today for demonstration purposes; an electric motor has taken over the operation of the man engine.

Sankt Andreasberg is a former town in the district of Goslar, in Lower Saxony, Germany. Since 1 November 2011, it is part of the town Braunlage. It is situated in the Harz, approximately 7 km west of Braunlage proper, and 20 km east of Osterode am Harz.

The Sonnenberg is a ski resort in the Upper Harz surrounded by the Harz National Park. The settlement of the same name located there is part of the borough of Sankt Andreasberg.

The Grünhirscher Stollen (also Grünhirschler Stollen or Grüne Hirschler Stollen, German: Green Stag's Adit) is an adit (German: Wasserlösungsstollen) for water drainage in Sankt Andreasberg, in the Harz mountains. It was created during mining in the Upper Harz and named after the valley Grüner Hirsch (German: Green Stag) between the mountains Galgenberg and Glockenberg. It leads from the Samson Pit to the south-west of the Galgenberg.The first 7.1 km of the 10.2 km adit is part of the Upper Harz Water Regale and has been declared UNESCO World Heritage Site.

The Hahnenklee Crags (German: Hahnenkleeklippen) are a rock formation west of Braunlage in the district of Goslar in Lower Saxony, Germany. They consist of hornfels.

The Oderteich is an historic reservoir about seven kilometres northeast of Sankt Andreasberg in the Upper Harz in central Germany. It was built by miners from St. Andreasberg in the years 1715 to 1722 and, today, is an important component of the water supply network known as the Upper Harz Water Regale (Oberharzer Wasserregal). Moreover, for 170 years, from the time it was completed to the end of the 19th century, the Oderteich had the largest dam in Germany. The dam lies at a height of 725 m above NN by the B 242 federal highway, about a kilometre west of its intersection with the B 4.

Silberhütte was once a village in the formerly free mining town of Sankt Andreasberg in the Harz mountains in Germany, but since its merger on 1 November 2011 it has been part of the borough of Braunlage. The name of the village goes back to the silver works that was existed here until 1912 and which smelted the ores from the mines around Sankt Andreasberg. According to Ließmann (2003), the smelting of the ores was carried out here soon after the opening of the Sankt Andreasberg silver mines. These naturally had a raised arsenic content. The silver works was located at the confluence of the Wäschegrundbach and the Sperrlutter - so that there was enough water power to drive the machines in the smeltery. Not only did the smelting workers here have to endure toxic emissions but, even in older accounts, there is talk of the massive nuisance caused by toxic, arsenic-containing, fumes from the smeltery which, in unfavourable weather conditions, swept into the town and occasionally forced the people living there to flee. The first smelting works are recorded at this locality around 1550. At the beginning of the Thirty Years' War, the smeltery was sold and demolished. When the silver mining industry flourished again in the 1680s, a new larger smelting works was built, which - rebuilt and extended several times - was in operation until 1912. In 1836, the responsible mining authority allowed the construction of a separate arsenic works on the Silberhütte site. In addition to arsenic trioxide, a toxic white powder, arsenic glass was also produced. Handling the powdery poison was very difficult. The workers were only sent into the chimneys to sweep the arsenic with a damp cloth in front of their faces - without a special bonus, hardly any worker was willing to sweep the arsenic dust. A contemporary report by master smelter, Seidensticker, stated that, "the arsenic trioxide produced cannot be weighed because this would cause disproportionately high costs and endanger workers' health more than the rest of the arsenic work put together."

At 925 m above sea level (NN), the Achtermannshöhe (also just called the Achtermann) in the Harz National Park is the third highest mountain in Lower Saxony and the fourth highest in the Harz mountains. It lies in the unincorporated area of Harz between the Harz-Heide route (B 4) and the old Inner German Border about 6 km north of Braunlage. Its summit, covered with loose boulders, stands proud of the surrounding trees and offers a superb all-round view. Equally its characteristic rounded hilltop or Kuppe is visible in good weather from many other points in the Harz. The Achtermann may be accessed by paths leading from Oderbrück and Königskrug.