Krefeld is a city located in western Germany, in the state of North Rhine-Westphalia. It lies along the Rhein River and is part of the Ruhr area, known for its industrial history. Krefeld has a population of around 230,000 people and is recognized for its textile industry, particularly silk production, which flourished in the 18th and 19th centuries. The city features several parks and cultural institutions, including the Krefeld Zoo and the Museum Haus Lange. Krefeld is also home to various historical buildings, such as the Burg Linn, a medieval castle. Its strategic location makes it a hub for transportation and commerce in the region.