Duesseldorf is the capital city of the German Federal State of North Rhine-Westphalia and one of the economic centres of Western Germany. Duesseldorf is located on the River Rhine and in the densely populated Rhine-Ruhr metropolitan area, with more than 10 million inhabitants. The city is famous for its carnival and events, also for fashion and trade fairs, like the Boot Messe (worldwide leading in boats and watersports) and Igedo (worldwide leading in fashion). Every year more than 4 Million people visit the Rhine folk festival during 9 days in summer.
Duesseldorf lies in the middle of the lower Rhine basin on the delta of the Düssel River where it flows into the Rhine. The city is on the east side of the Rhine, except for District 4 (Oberkassel, Niederkassel, Heerdt and Lörick).
Across the Rhine Neuss was built on the delta of the Erft river. Duesseldorf lies southwest of the Ruhr mining district, and in the middle of the Rhine-Ruhr urbanized region. Duesseldorf is built entirely on alluvium, muds, sands, clays and occasionally gravels.
Duesseldorf is not only widely known as a center of the German advertising and fashion industries: in the last few years the city on the Rhine has become one of the top telecommunications centers in Germany. There are 18 internet providers located in the capital of North-Rhine Westphalia. With two of the four big German providers of mobile frequencies, D2 Vodafone and E-Plus, Duesseldorf leads the German mobile phone market. There are also many foreign trading centers in Duesseldorf such as NTT, Ericsson, Nokia and GTS.
