Heldenplatz (German: Heroes' Square) is a public space in front of the Hofburg Palace in Vienna, Austria. Located in the Innere Stadt borough, the President of Austria resides in the adjoining Hofburg wing, while the Federal Chancellery is on adjacent Ballhausplatz. Many important actions and events took place here, most notably Adolf Hitler's ceremonial announcement of the Austrian Anschluss to Nazi Germany on 15 March 1938. Source: Wikipedia (en)