Bundeshaus

The Bundeshaus is a building complex in Bonn, Germany, which served as the Provisional Parliament House of West Germany, and thus the seat of the German Bundestag and Bundesrat, from 1949 until 1999. The main building, constructed between 1930 and 1933, served as a Pedagogical Academy until the end of the Second World War. After the resolution of the Hauptstadtfrage in 1949 in favor of Bonn, the structure was converted into the provisional seat of the Bundestag and Bundesrat.

For over forty years it served as the seat of both constitutional bodies. The Bundeshaus was expanded and renovated numerous times until these institutions were transferred to Berlin after the Hauptstadtbeschluss in 1999, nine years after the German reunification.

Source: Wikipedia