Reichstag (institution) , the Diets or parliaments of the Holy Roman Empire, of the Austrian-Hungarian monarchy and of Germany (Second and Third Reich) until 1945
Reichstag (building) , the building in Berlin in which the German legislature met from 1894 to 1933 and again since 1999
The Reichstag Fire in 1933, which provided a pretext for the Nazis to increase their power
