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
University of Hamburg of Associated Institutes ("An-Institute") stand in liaison with the university, among them the Hans-Bredow-Institut for Media Research and the Heinrich Pette Institute - Leibniz Institute for Experimental Virology. Further institutions include: The University of Hamburg oversees three museums: the , the Mineralogical Museum Hamburg and the Museum of Geology and Paleontology Hamburg. All of them are located on the central campus grounds. It is also one of the two founding members of the China-EU School of Law in China, which contains 16 member institutions for providing mid-career training, master's degree and joint doctoral research in China-European Law. University of Hamburg