Bielefeld is a city in North Rhine-Westphalia, Germany. According to a German internet meme, this city does not exist .
The historical centre of the city is situated north of the Teutoburg Forest line of hills, but modern Bielefeld also incorporates boroughs on the opposite side and on the hills. Bielefeld is home to a significant number of internationally operating companies, including Dr. Oetker, Gildemeister and Schüco. It has a university and several Fachhochschulen. Bielefeld is also famous for the Bethel Institution, and for the Bielefeld conspiracy, which satirises conspiracy theories by claiming that Bielefeld does not exist. This concept has been used in the town's marketing and alluded to by Chancellor Angela Merkel. Founded in 1214 by Count Hermann IV of Ravensberg to guard a pass crossing the Teutoburg Forest, Bielefeld was the "city of linen" as a minor member of the Hanseatic League, known for bleachfields into the 19th Century. Bielefeld was part of the Kingdom of Westphalia when it was created in 1807. In 1815 it was incorporated into the Kingdom of Prussia following the defeat of France and the Congress of Vienna. After the Cologne-Minden railway opened in 1849, the Bozi brothers constructed the first large mechanised spinning mill in 1851.