Stephansdom in Wien, Austria — Central Europe (Eastern Alps)
O5
O5 war das Geheimsymbol des Oesterr. Widerstands gegen das
nationalsozialistische Schreckensregime 1938-1945
Diese Mahntafel wurde zum andenken an die ermordeten
Widerstandskaempfer der oest. Widerstandsbewegung
Unter Praes. Prof. Norbert Macheiner im Okt. 2000 errichtet
AEIOU Allen Ernstes ist Oesterreich unersetzlich
"O5" was the secret symbol of the Austrian resistance against
the Nazi terror regime of 1938-1945.
This memorial tablet commemorates the murdered
resistance fighters of the Austrian resistance.
Installed by President Norbert Macheiner in October 2000.
AEIOU In all seriousness, Austria is irreplaceable
Erected 2000.
Topics. This memorial is listed in this topic list: War, World II.
Location. 48° 12.519′ N, 16° 22.349′ E. Marker is in Wien. It is in Stephansdom. Memorial is at the intersection of Stephansplatz and Jasomirgottstrasse, on the right when traveling north on Stephansplatz . Touch for map. Marker is at or near this postal address: Stephansplatz 3, Wien 1010, Austria. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Anton Maria Schwartz (about 90 meters away, measured in a direct line); The Austrian Branch of the Teutonic Order (about 120 meters away); Moritz Perles (about 150 meters away); Greta Keller (about 150 meters away); Gottlieb Muffat (about 180 meters away); Peter Altenberg (about 210 meters away); Charles de L'Ecluse (Clusius) (about 210 meters away); Josef Sonnleithner (about 210 meters away). Touch for a list and map of all markers in Wien.
More about this marker. The marker is located on the west side of the Cathedral (Domkirche St. Stephan), just to the right of the entrance, mounted in the ground, up against the church. It isn't obvious from any distance.
Also see . . .
1. Documentation Centre of Austrian Resistance (DÖW). (Submitted on July 12, 2017.)
2. Austrian Resistance (Wikipedia). The Austrian Resistance to Nazi rule was launched in response to the Anschluss in 1938. The members of the Resistance, limited primarily to adherents of the restoration of the Habsburg dynasty and the political left, operated in isolation from the Austrian mainstream during
the war years. Other strands of Austrian resistance included Catholics and monarchists. However, it is notable that several Austrian nationalists, some of them even with fascist sympathies, also resisted, opposed to the destruction of the Austrian state. The most prominent unifying symbol was former Crown Prince, Otto von Habsburg. (Submitted on July 12, 2017.)
3. Only a few righteous - symbols of resistance to Nazi rule (Austria-forum.org, in German). (Submitted on July 12, 2017.)

Photographed By Andrew Ruppenstein, June 14, 2017
3. O5 - Resistance Symbol Carved into the Wall of Stephansdom
The sign "O5", carved in the ancient stone, is found on the west side of the Stephansdom, just to the right of the Giant Gate. The sign "O5" was placed secretly to the right of the giant gate of the St. Stephen's Cathedral at the height of the battle for Vienna by Lieutenant-Colonel Mühlfeit. In 1965 it was cut into the stone. It serves the eternal memory of the Austrians who had been killed in the resistance, but also as a protest against the fact that the victims of the resistance struggle in the Second Republic have been very little taken care of. As one of the few signs of resistance, it reminds us of those Austrians who did not howl with the wolves, but risked their lives to save the honor of Austria. - Peter Diem, Only a few righteous - symbols of resistance to Nazi rule"
Credits. This page was last revised on February 1, 2022. It was originally submitted on July 12, 2017, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 570 times since then and 221 times this year. Photos: 1, 2, 3. submitted on July 12, 2017, by Andrew Ruppenstein of Lamorinda, California.