Krefeld, also known as Crefeld until 1929, is a city in North Rhine-Westphalia, Germany. It is located northwest of Düsseldorf, its centre lying just a few kilometres to the west of the River Rhine; the borough of Uerdingen is situated directly on the Rhine. Krefeld is accessed by the autobahns A57 and the A44 . Krefeld is also called the "Velvet and Silk City". Krefelds residents speak Hochdeutsch, the standard German taught to all people in Germany. However, the native dialect is a Low German variety, sometimes locally called Krefelder Plattdeutsch, Krieewelsch Platt, Plattdeutsch, or sometimes simply Platt. The Uerdingen line isogloss, separating general dialectical areas in Germany and neighbouring Germanic-speaking countries, runs through and is named after Krefelds Uerdingen district, originally an independent municipality.