St.-Jakobus-Kirche, Ilmenau

Ilmenau (German pronunciation: [ˈɪlmənaʊ̯] ) is a town in Thuringia, central Germany. It is the largest town within the Ilm district with a population of 38,600, while the district capital is Arnstadt. Ilmenau is located approximately 33 km (21 miles) south of Erfurt and 135 km (84 miles) north of Nuremberg within the Ilm valley at the northern edge of the Thuringian Forest at an elevation of 500 metres (1,640 feet). The most important institution in Ilmenau is the Technische Universität Ilmenau, a public research university and Thuringia's only "Technical University" with about 4,900 students and an emphasis on engineering disciplines, computer science, mathematics, natural sciences, economics, and media studies. Its precursor was founded in 1894 and developed into a university in 1992. Since 1990, many research institutes have been established in the vicinity making Ilmenau an important hub of technological research. Ilmenau was historically a small mining town, primarily silver, copper and manganese, until the deposits were depleted. After 1800, it was one of Johann Wolfgang von Goethe's favourite resorts because of its beautiful surroundings. In 1838, the establishment of the town as a spa led to the advent of tourism, which is still an important industry. Industrialisation started after the railway arrived in 1879, but increased rapidly during the following century primarily in glass and porcelain manufacturing. The porcelain factories closed (as in many other places in western Europe) during the 1990s. The glass industry, however, remained and produces laboratory equipment and measurement devices and is leading source of economic activity together with mechanical, electrical, and software engineering. Ilmenau and the surrounding region have produced many winter Olympic champions in disciplines such as luge, bobsleigh, and biathlon.

Gabelbach is a small river of Thuringia, Germany. It joins the Ilm in Ilmenau.

Ilmenau station is one of four stations in the Ilmenau municipality in the German state of Thuringia. The station is referred to locally as Ilmenau Hauptbahnhof (main station), but this has never been its official name.

Rottenbach is a small river of Thuringia, Germany. It joins the Ilm in Ilmenau.

International Student Week in Ilmenau is a student conference, held biennially in the town of Ilmenau, located in the district of Ilm-Kreis, Thuringia, Germany. The conference welcomes participants from all parts of the world. The first ISWI was held in 1993. At the conference participants discuss topics and experience a broad cultural exchange. Around 400 participants from over 80 countries took part in ISWI 2015. The week includes big-ticket lectures by distinguished personalities, the most well-known speakers are until this day Robert Jungk, Joseph Weizenbaum, Helmut Schmidt and Konrad Zuse. Each conference offers a wide range of cultural events, such as concerts, food festival, theme-based events and so on. These events mostly organized in collaboration various organisations based around the Ilmenau University of Technology. The news coverage is done by the college radio station Radio hsf, which broadcasts 24/10 during the conference. ISWI also stands for the name of the organizing organization, 'Initiative Solidarische Welt Ilmenau' e.V. or ‘Initiative for World Solidarity Ilmenau’ which is a non-governmental non-profit organization which aims to: "be an initiative for a more peaceful world - to promote mutual understanding and respect". ISWI e.V is the primary organiser of the International Student Week in Ilmenau. ISWI e.V is an active member of a network of student-organised conferences, 'Students ORganising Conferences Everywhere' SOrCE.

The Gehrener Schichten (German for Gehren Formation) is a geologic formation in Germany. The fluvial to lacustrine shales preserve fossils dating back to the Late Carboniferous period (Stephanian C in European stratigraphy or Gzhelian in international stratigraphy).

The Technische Universität Ilmenau (Ilmenau University of Technology, TU Ilmenau) is a German public research university located in Ilmenau, Thuringia, central Germany. Founded in 1894, it has five academic departments (faculties) with about 4,900 students. Teaching and research are focused on the fields of technology (including computer science), mathematics and natural sciences, business and media.

Schorte is a river of Thuringia, Germany. It flows into the Ilm in 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.

Kickelhahn is a mountain in the northern edge of the Central Thuringian Forest in the municipal area of Ilmenau, Germany. Its summit has an altitude of 861.1 metres (2,825 ft) a.s.l.

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.

Martinroda is a municipality in the district Ilm-Kreis, in Thuringia, Germany. The former municipality Angelroda was merged into Martinroda in December 2019.