23 March 1933 Reichstag speech
Adolf Hitler's March 1933 Reichstag speech as Chancellor is also known as the Enabling Act speech. Due to the Reichstag chamber being unusable following the fire on 27-28 February, the speech took place in the Kroll Opera House.
Source: Wikipedia — 23 March 1933 Reichstag speech (CC BY-SA 4.0)