Federal Convention (German Confederation)
The Federal Convention (or Confederate Diet German: Bundesversammlung or Bundestag) was the only general joint institution of the German Confederation (German: Deutscher Bund) from 1815 until 1848, and from 1851 until 1866. The Federal Convention had its seat in the Palais Thurn und Taxis in Frankfurt.
Source: Wikipedia — Federal Convention (German Confederation) (CC BY-SA 4.0)