Unity Flag, National monument near Reichstag Building, Germany

The Unity Flag is a 6 by 10 metre German federal flag on a 28.5 metre metal mast on Platz der Republik, in front of the western entrance of the Reichstag building in Berlin-Mitte. The mast stands a few metres from the southern end of the lower stairway, and its circular bronze base bears the inscription DEUTSCHE EINHEIT 3. OKTOBER 1990. Four spotlights of 250 watts each, set into the base, light the flag at night.

The flag was first raised on 2 October 1990 at 23:50, during the reunification celebrations, by seven young athletes from East and West Germany, on a wooden mast; the act was timed to coincide with reunification taking effect at midnight. The present metal mast, 28.5 m tall, replaced it, and the flag is regularly exchanged. Its base bears the bronze inscription DEUTSCHE EINHEIT 3. OKTOBER 1990.

The bronze ring around the mast base reads "DEUTSCHE EINHEIT 3. OKTOBER 1990". As a national monument, the flag is exempt from the Bundestag flagging convention and is normally not flown at half-mast; exceptions were ordered on 11 September 2001, 26 April 2002, 14 November 2015 and 23 March 2016.

The monument sits on Platz der Republik in Berlin-Mitte and remains accessible to visitors throughout the year. It is located right next to the Reichstag, making it easy to combine with a visit to the parliament building or a walk through the government district.

The flag is normally exempt from the Bundestag's flagging convention because it is classed as a national monument, so it is rarely flown at half-mast. Since 1990 this has happened only four times: 11 September 2001, 26 April 2002 after the Erfurt school shooting, 14 November 2015 after the Paris attacks and 23 March 2016 after the Brussels attacks.