The Central Emergency Government Headquarters

The Central Emergency Government Headquarters (HM1FL4)

Location: Ottawa, Ontario K0A 1L0 Ottawa Division
Country: Canada
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N 45° 21.062', W 76° 2.849'

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Le Siège Central du Gouvernement d'Urgence

Irreverently known as the "Diefenbunker," this structure is a powerful symbol of Canada's response to the Cold War. Designed in the 1950s to withstand all but a direct his by a nuclear weapon, it was intended to shelter key political and military personnel during a nuclear attack. Fortunately, it never served its intended purpose, although the Diefenbaker government made plans to retreat to its protection during the Cuban missile crisis of 1962. The bunker functioned as the hub of a communications network and civil defence system until it closed in 1994.


Surmommée le «Diefenbunker», cette structure est un frappant rappel de la réaction du Canada à la Guerre froide. Conçue durant les années 1950 en vue de résister à tout, sauf à l'explosion de plein fouet d'une ogive nucléaire, elle était destinée à abriter les dirigeants-clés du Canada en cas de cataclysme. Heureusement, elle n'a jamais été utilisée à cette fin, bien que le gouvernement Diefenbaker ait songé à s'y réfugier durant la Crise de Cuba en 1962. Le bunker a servi de centre de communication et de système de défense civile jusqu'à sa fermeture en 1994.
HM NumberHM1FL4
Placed ByHistoric Sites and Monuments Board of Canada/Commission des lieux et monuments historiques du Canada.
By William Fischer, Jr., July 2, 2014
2. The Central Emergency Government Headquarters Marker
At visitor center, former military checkpoint
  Marker ConditionNo reports yet Date Added Thursday, October 2nd, 2014 at 7:59am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18T E 417948 N 5022480
Decimal Degrees45.35103333, -76.04748333
Degrees and Decimal MinutesN 45° 21.062', W 76° 2.849'
Degrees, Minutes and Seconds45° 21' 3.72" N, 76° 2' 50.94" W
Driving DirectionsGoogle Maps
Area Code(s)315
Which side of the road?Marker is on the right when traveling East
Closest Postal AddressAt or near 3911-3929 5, Ottawa Ontario K0A 1L0, CA
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