Düsseldorf is the capital and second largest city in the German state of North Rhine-Westphalia, and the seventh largest city in all of Germany. Yesterday, Düsseldorf’s mayor presented the above mark that will be used to market and represent the city. Reports say it will be supplementary and that existing city logos will remain in use.
The new symbol is recognised around the world as a happy emoticon, that is produced a colon and the letter D. That letter also happens to be the first letter in Düsseldorf. via BrandingSource