Dresden architecture and numerous world-renowned museums and art collections, Dresden has been called "Elbflorenz" (Florence of the Elbe). The incorporation of neighbouring rural communities over the past 60 years has made Dresden the twelfth largest urban district by area in Germany after Berlin, Hamburg and Cologne. The nearest German cities are Chemnitz to the southwest, Leipzig to the northwest and Berlin to the north. Prague, Czech Republic is about to the south and to the east is the Polish city of Wrocław. Dresden is one of the greenest cities in all of Europe, with 63% of the city being green areas
General German Workers' Association establishment of the German Empire. Its members were known colloquially throughout Germany as Lassalleans. The ADAV was founded in Leipzig by Ferdinand Lassalle and twelve delegates from some of the most important cities in Germany, namely Barmen, Dresden, Düsseldorf, Elberfeld, Frankfurt am Main, Hamburg, Harburg, Cologne, Leipzig, Mainz and Solingen. The ADAV sought to advance the interests of the working class and to work for the establishment of socialism by the use of electoral politics. Lassalle acted as president from 23 May 1863 until his death in a duel on 31 August 1864. The unofficial organ of the ADAV was