Thuringian Forest in the context of "Gotha"

Erfurt (German pronunciation: [ˈɛʁfʊʁt] ) is the capital and largest city of the Central German state of Thuringia, with a population of around 216,000. It lies in the wide valley of the River Gera, in the southern part of the Thuringian Basin, north of the Thuringian Forest, and in the middle of a line of the six largest Thuringian cities (Thüringer Städtekette), stretching from Eisenach in the west, via Gotha, Erfurt, Weimar and Jena, to Gera in the east. Together with Kassel and Göttingen, it is one of the cities with more than 100,000 inhabitants lying closest to the geographic centre of Germany. Erfurt is 100 km (62 mi) south-west of Leipzig, 250 km (155 mi) north-east of Frankfurt, 300 km (186 mi) south-west of Berlin and 400 km (249 mi) north of Munich.

Erfurt's old town is one of the best preserved medieval city centres in Germany. The Gera is spanned by the Merchants' Bridge (Krämerbrücke), one of the rare bridges with houses built on it. On the Erfurt Cathedral Hill is the ensemble of Erfurt Cathedral—which houses the world's largest free-swinging medieval bell—and St Severus' Church. Petersberg Citadel is one of the largest and best preserved town fortresses in Central Europe. Erfurt's Old Synagogue is the oldest synagogue in Europe, and together with the Erfurt Mikveh [de], which was only rediscovered in 2007, and the Stone House [de], forms the UNESCO World Heritage Site Jewish-Medieval Heritage of Erfurt.

Ilmenau (German pronunciation: [ˈɪlmənaʊ] ) 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.

The Weser (pronounced [ˈveːzɐ] ) is the second longest river in Germany. Weser flows from the Thuringian Forest to the North Sea, where it flows into the sea near Bremerhaven.

The Weser begins at Hannoversch Münden through the confluence of the Werra and Fulda. It passes through the Hanseatic city of Bremen. Its mouth is 50 km (31 mi) further north against the ports of Bremerhaven and Nordenham. The latter is on the Butjadingen Peninsula. It then merges into the North Sea via two highly saline, estuarine mouths.

The Werra (German pronunciation: [ˈvɛʁa] ), a river in central Germany, is the right-bank headwater of the Weser. "Weser" is a synonym in an old dialect of German. The Werra has its source near Eisfeld in southern Thuringia. After 293 kilometres (182 mi) the Werra joins the river Fulda in the town of Hann. Münden, forming the Weser. If the Werra is included as part of the Weser, the Weser is the longest river entirely within German territory at 744 kilometres (462 mi).

Its valley, the Werratal, has many tributaries and is a relative lull between the Rhön Mountains and the Thuringian Forest.

The Gera (German pronunciation: [ˈɡeːʁa] ) is a river in Thuringia, Germany.

The Gera is a right tributary of the Unstrut. It originates in the Thuringian Forest, west of Ilmenau. The Gera is formed in Plaue, by the confluence of the Wilde Gera and the Zahme Gera. It empties into the Unstrut in Straußfurt. The total length of the Gera (including Wilde Gera) is 85 km (53 mi). The largest towns along the Gera are Arnstadt and Erfurt. The city Gera is not situated along the River Gera.

The Thuringian Basin (German: Thüringer Becken, pronounced [ˈtyːʁɪŋɐ ˈbɛkn̩]) is a depression in the central and northwest part of Thuringia in Germany which is crossed by several rivers, the longest of which is the Unstrut. It stretches about 60 kilometres (37 mi) from north to south and around 120 kilometres (75 mi) from east to west. Its height varies from about 150 to 250 m above sea level (NN).

The Basin is surrounded by a wide outer girdle of limestone (Muschelkalk) ridges (including Hainich, Dün, Hainleite, Hohe Schrecke, Schmücke, Finne), and to the southwest by the Thuringian Forest and to the southeast by sharply divided terraces (the Ilm-Saale and Ohrdruf Muschelkalk plateaus, and the Saale-Elster Bunter sandstone plateau). The Thuringian Basin belongs to the triassic period, during which horizontal beds of Bunter sandstone, Muschelkalk and Keuper were laid down. Below those lie the salt and gypsum layers of Magnesian Limestone (Zechstein). In the Cenozoic era the surrounding ridges were uplifted, whilst the Thuringian Basin sank to form a saucer-shaped depression.

Franconia (German: Franken [ˈfʁaŋkn̩] ; East Franconian: Franggn [ˈfrɑŋɡŋ̍]; Bavarian: Frankn) is a geographical region of Germany, characterised by its culture and East Franconian dialect (Ostfränkisch). Franconia is made up of the three Regierungsbezirke (governmental districts) of Lower, Middle and Upper Franconia in Bavaria, the adjacent, Franconian-speaking South Thuringia, south of the Thuringian Forest—which constitutes the language boundary between Franconian and Thuringian—and the eastern parts of Heilbronn-Franconia in Baden-Württemberg.

Those parts of the Vogtland lying in Saxony (largest city: Plauen) are sometimes regarded as Franconian as well, because the Vogtlandian dialects are mostly East Franconian. The inhabitants of Saxon Vogtland, however, mostly do not consider themselves Franconian. On the other hand, the inhabitants of the Hessian-speaking parts of Lower Franconia west of the Spessart (largest city: Aschaffenburg) do consider themselves Franconian, although not speaking the dialect. Heilbronn-Franconia's largest city of Heilbronn and its surrounding areas are South Franconian-speaking, and therefore only sometimes regarded as Franconian. In Hesse, the east of the Fulda District is Franconian-speaking, and parts of the Oden Forest District are sometimes regarded as Franconian for historical reasons, but a Franconian identity did not develop there.

Arnstadt (German pronunciation: [ˈaʁnˌʃtat] ) is a town in Ilm-Kreis, Thuringia, Germany, on the river Gera about 20 kilometres (12 mi) south of Erfurt, the capital of Thuringia. Arnstadt is one of the oldest towns in Thuringia, and has a well-preserved historic centre with a partially preserved town wall. The town is nicknamed Das Tor zum Thüringer Wald ("The Gateway to the Thuringian Forest") because of its location on the northern edge of that forest. Arnstadt has a population of approximately 27,000.