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
Hamburg, Pennsylvania building lots, naming the area "Kaercher Stadt". Hamburg was officially founded in 1787, named after the "German Hamburg" due to the largely German population of the region. On July 1, 1798 Hamburg became the second town with postal designation in Berks County, preceded only by Reading. The Centre Turnpike was created in 1812 running between the two cities of Reading and Pottsville. Hamburg began to grow rapidly due to the close proximity of a major roadway. Eight years later (1820) the Schuylkill Canal was completed, followed quickly by railroad lines. Both of these advances in infrastructure had stops in Hamburg