Karlsruhe (South Franconian: Kallsruh, Alemannic German: Karlsrueh or Chaarlsruei) is a city in the south-west of Germany, in the state of Baden-Württemberg.
As of 2016, Karlsruhe has about 308,000 people.
The city lies on the eastern shore of the Rhine River and has a technical university.
France is close by, on the other side of the Rhine River, a few kilometers to the south.
Karlsruhe is the seat of the Bundesverfassungsgericht (Federal Constitutional Court of Germany).