Bochum (Westphalian: Baukem) is a city in the state of North Rhine-Westphalia, Germany and part of the Arnsberg region.
City district is a type of administrative division of Russia (raion), Pakistan, Croatia (gradski kotar or gradska četvrt in the city of Zagreb) and Serbia (градска четврт/gradska četvrt).
Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.
A metropolis is a large city or conurbation which is a significant economic, political, and cultural center for a country or region, and an important hub for regional or international connections, commerce, and communications.
North Rhine-Westphalia (Nordrhein-Westfalen,, commonly shortened to NRW) is the most populous state of Germany, with a population of approximately 18 million, and the fourth largest by area.
The Ruhr (Ruhrgebiet), or the Ruhr district, Ruhr region, Ruhr area or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany.
Wattenscheid is a Stadtbezirk of the city of Bochum.