Frankfurt Rhine Main Region in the context of "Main (river)"

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.

Königstein im Taunus (German pronunciation: [ˈkøːnɪçʃtaɪn ʔɪm ˈtaʊnʊs] , lit. 'Königstein in the Taunus') is a health spa and lies on the thickly wooded slopes of the Taunus in Hesse, Germany. The town is part of the Frankfurt Rhein-Main urban area. Owing to its advantageous location for both scenery and transport on the edge of the Frankfurt Rhine Main Region, Königstein is a favourite residential town. Neighbouring places are Kronberg im Taunus, Glashütten, Schwalbach am Taunus, Bad Soden am Taunus and Kelkheim.