Geography and urban development of Dresden past 60 years has made Dresden the fourth largest urban area in Germany after Berlin, Hamburg, and Cologne. The most important river in Dresden is the Elbe river, the only navigable body of water to flow through the city. There are also a number of tributaries such as the river Weißeritz. The nearest German cities are Chemnitz (80 km to the southwest), Leipzig (100 km to the northwest) and Berlin (200 km to the north). The Czech capital Prague is about 150 km to the south; the Polish city of Wrocław is about 200 km to the east. There are
Dresden Dresden twinned with the Dutch city of Rotterdam. The Coventry Blitz and Rotterdam Blitz bombardments by the German Luftwaffe are also considered to be disproportional. Dresden has had a triangular partnership with Saint Petersburg and Hamburg since 1987. Dresden has 14 twin cities. Carl Maria von Weber and Richard Wagner had a number of their works performed for the first time in Dresden. Other famous artists, such as Ernst Ludwig Kirchner, Otto Dix, Oskar Kokoschka, Richard Strauss, Gottfried Semper and Gret Palucca, were also active in the city. Dresden is also home to several important art collections, world-famous musical ensembles,