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
Accession of Hamburg to the German Customs Union (Zollverein) proposal on 14 June, which was carried by nine votes to six. The three Hanseatic cities, through their joint envoy Friedrich Krüger, voted against the Austrian proposal and made a declaration (formulated by Lübeck) that the events in Holstein did not justify Federal mobilisation, because the danger of immediate military collision had passed. Then on 16 June, Emil von Richthofen, the Prussian envoy to the Hanseatic states, presented to the Hamburg Senate and other German governments an "identical note" asking for an alliance on the basis of Prussia's reform proposal placed before the Diet and requesting that its troops be