Wolfsburg is a city in Lower Saxony, Germany. It is located on the River Aller northeast of Braunschweig (Brunswick), and is mainly notable as the headquarters of Volkswagen AG. Wolfsburg is bordered by the districts of Gifhorn and Helmstedt. Wolfsburg was founded in 1938 as Stadt des KdF-Wagens (English: City of the KdF Car), a planned town around the village of Hesslingen in the District of Gifhorn in order to house the workers of the Volkswagen factories. During World War II, there were also jeeps, airplanes and other military equipment built, mainly by forced workers and POWs at these factories. The trainstation of Wolfsburg was built by attorney of Adolf Hitler in order to transport or receive prefabricated parts for military equipment. In 1945, the city was renamed Wolfsburg after the castle of the same name located in the city, which was founded about 1300 on the bank of the Aller river. Today, there is another castle at the place, which was built after 1600. In 1951, Wolfsburg was separated from the District of Gifhorn, and became an urban district. In November 2003, Wolfsburg was renamed Golfsburg for one week to celebrate the 5th generation of the Volkswagen Golf. Wolfsburg lacks historical buildings, and the sights include new attractions like the Autostadt (a huge open air museum dedicated to automobiles, owned and operated by Volkswagen), a planetarium, the Phaeno Science Center, the largest hands-on science museum in Germany, and an excellent private art museum (Kunstmuseum Wolfsburg) specialised in modern and contemporary art. With the opening in 2000 of Autostadt and that of Phaeno, as well as restaurants and a Ritz Carlton Hotel, tourism increased.