Wohlrose

Wümbach is a small river of Thuringia, Germany. It joins the Ilm in Wolfsberg.

Lohme is a river of Thuringia, Germany. It joins the Ilm near Langewiesen.

Wolfsberg is a village and a former municipality in the district Ilm-Kreis, in Thuringia, Germany. Wolfsberg was created in 1994 by uniting the former municipalities Bücheloh, Gräfinau-Angstedt and Wümbach. Since July 2018, Wolfsberg is part of the town Ilmenau.

Langewiesen is a town and a former municipality in the Ilm-Kreis district, in Thuringia, Germany. Since July 2018, it is part of the town Ilmenau. It is situated on the river Ilm, 4 km southeast of Ilmenau.

Langer Berg is a former Verwaltungsgemeinschaft ("collective municipality") in the district Ilm-Kreis, in Thuringia, Germany. The seat of the Verwaltungsgemeinschaft was in Gehren. It was disbanded in July 2018. The Verwaltungsgemeinschaft Langer Berg consisted of the following municipalities: Gehren Herschdorf Neustadt am Rennsteig Pennewitz

Oberes Geratal is a former Verwaltungsgemeinschaft ("collective municipality") in the district Ilm-Kreis, in Thuringia, Germany. The seat of the Verwaltungsgemeinschaft was in Gräfenroda. It was disbanded in January 2019. The Verwaltungsgemeinschaft Oberes Geratal consisted of the following municipalities: Frankenhain Gehlberg Geschwenda Gossel Gräfenroda Liebenstein Plaue

Gehren is a town and a former independent municipality in the Ilm-Kreis district, in Thuringia, Germany. It is situated 7 km southeast of Ilmenau. It officially became a town in its own right ('Stadt') in 1855. However, since July 2018, it has been part of the town of Ilmenau. Between 1881 and 1998, Gehren was linked to Ilmenau by a railway. The castle of Gehren burned down in 1936. Until 1920, Gehren was the capital of the Amt Gehren in the state of Schwarzburg-Sondershausen.

Schobse is a river of Thuringia, Germany. It flows into the Wohlrose in Gehren.

The Burgstein is a rock formation, about 10 metres (33 ft) high, in the valley of the Ilm in Langewiesen in the central German state of Thuringia. It is made from quartz porphyry and has been a geological natural monument since 1939. It was formed when the Ilm carved out its valley and washed away the surrounding rock. When the Ilmenau–Großbreitenbach railway was built in 1881 it was exposed again because rock at its foot was removed in order to lay the railway track. The rock dates to the Pennsylvanian sub-period and belongs to the Möhrenbach Formation. The origin of its name is not clear (Burgstein literally means "castle rock"). In Langewiesen, the road of Burgstein is named after the rock.

Humbach is a small river of Thuringia, Germany. It joins the Ilm near Cottendorf.

Pennewitz is a village and a former municipality in the district Ilm-Kreis, in Thuringia, Germany. Since July 2018, it is part of the town Ilmenau.

The Ehrenberg is a hill to the east of Ilmenau, rising to a height of 528 metres and standing opposite the Tragberg. The border between Ilmenau and Langewiesen runs over its summit, which is marked by a large wooden cross. It is home to part of the campus of the Technische Universität Ilmenau (Technical University of Ilmenau) and the Bundesanstalt für Wasserbau (Federal Institute for Hydraulic Engineering). On 22 July 2006, around 6,000 square metres of the Ehrenberg were destroyed in a forest fire, although damage to buildings was limited. The body of the Ehrenberg itself is notable geologically for containing hydrobiotite, sometimes also called voigtite.