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
Zoological Garden of Hamburg society for the purposes of creating a zoo. On July 10, 1860, at the charter meeting of the Zoological Society of Hamburg (German: "Zoologische Gesellschaft in Hamburg"), Merck was selected as president. It was the fifth zoo in Germany, following the Berlin Zoological Garden in 1844, the Frankfurt Zoological Garden in 1858, the Cologne Zoological Garden in 1860 and the Dresden Zoo in 1861. The Society was a shareholding company. In 1861 it purchased a 13-hectare (32 acre) plot of land outside the Hamburg city walls, next to a municipal cemetery. In November 1862 the zoo issued additional shares to