North Rhine-Westphalia
North Rhine-Westphalia (German Nordrhein-Westfalen) is the most populous state in Germany, with 17.5 million inhabitants, located in the west of the country. It consists of two historically independent parts - Nordrhein, the urbanized area across the river Rhine in the southwest, and Westfalen in the northeast, which is quite diverse as it includes both the heavy industrialized and densely populated Ruhr Valley and the very green Teutoburg Forest.