Düsseldorf is the capital city of the German state of North Rhine-Westphalia. It is known for its vibrant arts scene, fashion industry, and trade fairs. The city is situated along the Rhine River, providing picturesque views and a pleasant waterfront area. The city's historic center, called Altstadt, features narrow streets, traditional breweries, and the famous Königsallee, a luxury shopping boulevard. Düsseldorf is also home to several museums, including the Kunstsammlung Nordrhein-Westfalen, which showcases modern and contemporary art. The city's economy is strong, with a focus on telecommunications, advertising, and financial services.