Karlsruhe is the third-largest city of the German state of Baden-Württemberg after its capital Stuttgart and Mannheim, and the 22nd-largest city in the nation, with 308,436 inhabitants. It is also a former capital of Baden, a historic region named after Hohenbaden Castle in the city of Baden-Baden. Located on the right bank of the Rhine near the French border, between the Mannheim/Ludwigshafen conurbation to the north and Strasbourg/Kehl to the south, Karlsruhe is Germany's legal center, being home to the Federal Constitutional Court, the Federal Court of Justice and the Public Prosecutor General of the Federal Court of Justice.
Karlsruhe was the capital of the Margraviate of Baden-Durlach, the Margraviate of Baden, the Electorate of Baden, the Grand Duchy of Baden, and the Republic of Baden. Its most remarkable building is Karlsruhe Palace, which was built in 1715.
Wikipedia https://en.wikipedia.org/wiki/Karlsruhe
Official Website https://www.karlsruhe.de/
Coordinates 49°0'24.734" N 8°24'12.31" E