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
Economy of Dresden to its dynamism, among other factors, the economy of Dresden is ranked among the best ten cities in Germany to live in. Three major sectors can be seen as dominating the Dresden economy: The semiconductor industry was built up in 1969 around the "Zentrum Mikroelektronik Dresden," which is a joint stock company named ZMDI today. The labour force's knowledge and education in technology, as well as intensive subsidies, has drawn other enterprises and global players such as AMD, Infineon Technologies (now partly owned by Qimonda), and Toppan Photomasks to site some of their production capability in Dresden. Their factories attract