Duisburg in the context of "Basic oxygen furnace"

The Ruhr (/ˈrʊər/ ROOR; German: Ruhrgebiet [ˈʁuːɐ̯ɡəˌbiːt] , also Ruhrpott German pronunciation: [ˈʁuːɐ̯pɔt] ), also referred to as the Ruhr Area, sometimes Ruhr District, Ruhr Region, or Ruhr Valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 1,160/km and a population of over 5 million (2017), it is the largest urban area in Germany and the third of the European Union. It consists of several large cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 10 million people, which is the third largest in Western Europe, behind only London and Paris.

The Ruhr cities are, from west to east: Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Witten, Hagen, Dortmund, Hamm and the districts of Wesel, Recklinghausen, Unna and Ennepe-Ruhr-Kreis. The most populous cities are Dortmund (with a population of approximately 612,065), Essen (about 583,000) and Duisburg (about 497,000).

The Rhine-Ruhr metropolitan region (German: Metropolregion Rhein-Ruhr) is the largest metropolitan region in Germany, with over ten million inhabitants. A polycentric conurbation with several major urban concentrations, the region covers an area of 7,110 square kilometres (2,750 sq mi), entirely within the federal state of North Rhine-Westphalia. The Rhine-Ruhr metropolitan region spreads from the Ruhr area (Dortmund-Bochum-Essen-Duisburg) in the north to the urban areas of the cities of Mönchengladbach, Düsseldorf (the state capital), Wuppertal, Leverkusen, Cologne (the region's largest and Germany's fourth largest city), and Bonn in the south. The location of the Rhine-Ruhr at the heart of the European Blue Banana makes it well connected to other major European cities and metropolitan areas such as the Randstad, the Flemish Diamond and the Frankfurt Rhine Main Region.

The metropolitan area is named after the Rhine and Ruhr rivers, which are the region's defining geographical features and historically its economic backbone.

Oberhausen (/ˈoʊbərhaʊzən/, German: [ˈoːbɐhaʊzn̩] ) is a city on the river Emscher in the Ruhr Area, Germany, located between Duisburg and Essen (c. 13 km or 8 mi). The city hosts the International Short Film Festival Oberhausen, The Static Roots Festival and its Gasometer Oberhausen is an anchor point of the European Route of Industrial Heritage.

Mülheim, officially Mülheim an der Ruhr (German pronunciation: [ˈmyːlhaɪm ʔan deːɐ̯ ˈʁuːɐ̯] , lit. 'Mülheim on the Ruhr'; Low German: Mölm; Kölsch: Müllem) and also described as "City on the River", is a city in North Rhine-Westphalia in western Germany. It is located in the Ruhr Area between Duisburg, Essen, Oberhausen and Ratingen. It is home to many companies, and two Max Planck Institutes.

Mülheim an der Ruhr was granted city rights in 1808, and a century later its population surpassed 100,000, officially making it a major city.”

Gelsenkirchen (/ˌɡɛlzənˈkɪərxən/, /ˈɡɛlzənkɪərxən/; German: [ˌɡɛlzn̩ˈkɪʁçn̩] ; Westphalian: Gelsenkiärken) is the 25th-most populous city of Germany and the 11th-most populous in the state of North Rhine-Westphalia with 262,528 (2016) inhabitants. On the Emscher River (a tributary of the Rhine), it lies at the centre of the Ruhr area, the largest urban area of Germany, of which it is the fifth-largest city after Dortmund, Essen, Duisburg and Bochum. The Ruhr is located in the Rhine-Ruhr metropolitan region, the second-biggest metropolitan region by GDP in the European Union. Gelsenkirchen is the fifth-largest city of Westphalia after Dortmund, Bochum, Bielefeld and Münster, and it is one of the southernmost cities in the Low German dialect area. The city is home to the football club Schalke 04, which is named after Gelsenkirchen-Schalke. The club's current stadium Veltins-Arena, however, is located in Gelsenkirchen-Erle [de].

Gelsenkirchen was first documented in 1150, but it remained a tiny village until the 19th century, when the Industrial Revolution led to the economic and population growth of the region. In 1840, when the mining of coal began, 6,000 inhabitants lived in Gelsenkirchen; by 1900 the population had increased to 138,000. In the early 20th century, Gelsenkirchen was the most important coalmining town in Europe. It was called the "city of a thousand fires" for the flames of mine gases flaring at night. In 1928, Gelsenkirchen was merged with the adjoining cities of Buer and Gelsenkirchen-Horst [de]. The city bore the name Gelsenkirchen-Buer, until it was renamed Gelsenkirchen in 1930. The city remained a center of coal mining and oil refining during the Nazi era, so was often a target of Allied bombing raids during World War II: nevertheless, over a third of the city's buildings date from before 1949. There are no longer coalmines in and around Gelsenkirchen; the city is searching for a new economic basis, having been afflicted for decades with one of the country's highest unemployment rates.

Bochum (/ˈboʊxʊm/, BOHKH-uum; US: /-əm/ -⁠əm; German: [ˈboːxʊm] ; Westphalian: Baukem) is a city in North Rhine-Westphalia. With a population of 372,348 (April 2023), it is the sixth-largest city (after Cologne, Düsseldorf, Dortmund, Essen and Duisburg) in North Rhine-Westphalia, the most populous German federal state, and the 16th-largest city in Germany. On the Ruhr Heights (Ruhrhöhen) hill chain, between the rivers Ruhr to the south and Emscher to the north (tributaries of the Rhine), it is the second largest city of Westphalia after Dortmund, and the fourth largest city of the Ruhr after Dortmund, Essen and Duisburg. It lies at the centre of the Ruhr, Germany's largest urban area, in the Rhine-Ruhr Metropolitan Region, the second biggest metropolitan region by GDP in the European Union, and belongs to the region of Arnsberg. There are nine institutions of higher education in the city, most notably the Ruhr University Bochum (Ruhr-Universität Bochum), one of the ten largest universities in Germany, and the Bochum University of Applied Sciences (Hochschule Bochum).

Wesel (German pronunciation: [ˈveːzl̩]) is a Kreis (district) in the northwestern part of North Rhine-Westphalia, Germany. Neighboring districts are Borken, Recklinghausen, district-free cities Bottrop, Oberhausen, Duisburg and Krefeld, districts Viersen, Cleves.

The Chongqing–Xinjiang–Europe railway, abbreviated as Yu–Xin–Ou railway (Chinese: 渝新欧铁路; pinyin: Yú–Xīn–Ōu tiělù), is a freight rail route linking Chongqing in Southwestern China, with Duisburg, Germany. The abbreviation consists of Yu (渝) for Chongqing, Xin (新) for Xinjiang, and Ou (欧) for Europe.

It passes through the Dzungarian Gate into Kazakhstan, and moves through Russia, Belarus and Poland before arriving in Duisburg. The railway is part of a growing rail network connecting China and Europe along the New Silk Road.

The Rhine–Herne Canal (German: Rhein-Herne-Kanal) is a 45.6-kilometre-long (28.3 mi) transportation canal in the Ruhr area of North Rhine-Westphalia, Germany, with five canal locks. The canal was built over a period of eight years (5 April 1906 – 14 July 1914) and connects the harbour in Duisburg on the Rhine (51°26′59″N 6°46′1″E / 51.44972°N 6.76694°E / 51.44972; 6.76694) with the Dortmund-Ems Canal near Henrichenburg (51°37′1″N 7°19′19″E / 51.61694°N 7.32194°E / 51.61694; 7.32194), following the valley of the Emscher. It was widened in the 1980s. The Rhein-Herne canal ship was designed specifically for this canal; normally of about 1300–1350 ton capacity, it has a maximum draft of 2.50 metres (8.2 ft), a length of approximately 80 metres (260 ft), and maximum beam of 9.50 metres (31.2 ft).

Originally the Rhine-Herne canal ended in Herne, where it met a branch of the Dortmund-Ems-Kanal running from Henrichenburg to Herne, the intersection situated just above the East Herne lock.

The Hindenburgdamm or Hindenburg Dam is an 11 km (7 mile) long causeway joining the North Frisian island of Sylt to mainland Schleswig-Holstein. Its coordinates are 54°53′N 8°33′E / 54.883°N 8.550°E / 54.883; 8.550. It was opened on 1 June 1927 and is exclusively a railway corridor. The companies that built the Hindenburgdamm, a job that took four years, were Philipp Holzmann AG of Frankfurt, working from the mainland, and Peter Fix Söhne of Duisburg working from Sylt. A train trip along the causeway takes about 10 minutes, and the time between the auto terminals at Niebüll on the mainland and Westerland on Sylt is about 30 minutes. The Hindenburgdamm is part of the railway line known as the Marschbahn ("Marsh Railway"), which is double-tracked along much of the route, although there as yet exists a single-tracked stretch. On the causeway is a signal box. The rail line is not electrified making the use of diesel locomotives necessary. Trains coming from origins further south like Hamburg change from an electric locomotive to a diesel locomotive at Itzehoe.

Every day, more than 100 trains pass over the causeway, 50 of those ferrying cars (there is no road link to Sylt). Each year, the railway ferries more than 450,000 vehicles over the causeway.

The term von ([fɔn] ) is used in German surnames either as a nobiliary particle indicating a noble patrilineality, or as a simple preposition used by commoners that means 'of' or 'from'.

Nobility directories like the Almanach de Gotha often abbreviate the noble term von to v. In medieval or early modern names, the von particle was at times added to commoners' names; thus, Hans von Duisburg meant 'Hans from [the city of] Duisburg'. This meaning is preserved in Swiss toponymic surnames and in the Dutch van, which is a cognate of von but also does not necessarily indicate nobility.

Gustav Weigand (1 February 1860 – 8 July 1930) was a German linguist and specialist in Balkan languages, especially Romanian and Aromanian. He is known for his seminal contributions to the dialectology of the Romance languages of the Balkans and to the study of the relationships between the languages of the Balkan sprachbund. He has also provided substantial contribution to Aromanian studies, an example of this being the discovery and publication of the contents of the Codex Dimonie.

Weigand was born in Duisburg, in the Rhine Province of Prussia. He studied Romance languages in Leipzig and wrote a doctoral thesis about the language of the Aromanians in Livadi in the region of Mount Olympus in 1888, followed by a habilitation thesis on the Megleno-Romanian language in 1892. In 1893 he founded the Romanian Institute at the University of Leipzig, the first such institution outside Romania. During the following years he continued to conduct extensive personal field studies in the Balkans. In 1908, he published a Linguistic Atlas of the Daco-Romanian speech area (German: Linguistischer Atlas des dacorumänischen Sprachgebiets), the first work of its kind in the field of Romance linguistics. During the First World War, he was sent by Imperial German authorities to conduct ethnographic studies in Macedonia, then under German occupation. The results were published in 1923.

Bundesautobahn 3 (translates from German as Federal Motorway 3, short form Autobahn 3, abbreviated as BAB 3 or A 3) is an autobahn in Germany running from the Germany-Netherlands border near Wesel in the northwest to the Germany-Austria border near Passau.

Major cities along its total length of 778 km (483 mi) include Oberhausen, Duisburg, Düsseldorf, Leverkusen, Cologne, Wiesbaden, Frankfurt, Würzburg, Nuremberg and Regensburg. The A 3 is a major connection between the Rhine-Ruhr area and southern Germany, resulting in heavy traffic. Consequently, large parts have three lanes (plus a hard shoulder) in each direction, including a 300 km (187.5 mi) section between Oberhausen and Aschaffenburg.

Mettmann (German pronunciation: [ˈmɛtman]) is a Kreis (district) in the middle of North Rhine-Westphalia, Germany. Neighboring are the Ennepe-Ruhr, Rhein-Kreis Neuss, Rheinisch-Bergischer Kreis and thedistrict-free cities Cologne, Leverkusen, Wuppertal, Solingen, Düsseldorf,Duisburg, Mülheim, Essen. It is the most densely populated rural district in Germany; it borders Düsseldorf Airport in the northwestern district borders, on the city limits of Ratingen, and is also near Cologne Bonn Airport. It was named after Mettmann, its district seat.