 It is the largest city of Baden, a historic region named after Hohenbaden Castle in the city of Baden-Baden.Karlsruhe is also the largest city in the South Franconian dialect area (transitional dialects between Central and Upper German), the only other larger city in that area being Heilbronn.The city is the seat of the Federal Constitutional Court ("Bundesverfassungsgericht"), as well as of the Federal Court of Justice ("Bundesgerichtshof") and the Public Prosecutor General of the Federal Court of Justice ("Generalbundesanwalt beim Bundesgerichtshof").