Ruins of the Chūgoku Regional Military Headquarters Air Defense Room
Ruins of the Chūgoku Regional Military Headquarters Air Defense Room, Military command bunker at Hiroshima Castle, Japan.
The underground reinforced concrete command center contains preserved sections of the original military communications infrastructure and defensive installations from World War II.
This military facility gained importance on August 6, 1945, when 14-year-old Yoshie Oka transmitted the first report of the atomic bombing through military telephone lines.
The bunker represents the involvement of civilian students in military operations, as Hijiyama Girls High School students operated communications equipment during wartime.
Visitors can reach the ruins by taking streetcar lines 1, 2, or 6 to Kamiya-cho Higashi station and walking fifteen minutes toward Hiroshima Castle.
Located 790 meters from the atomic blast hypocenter, this structure remains one of few surviving military command facilities from the bombing of Hiroshima.
Location: Motomachi
Inception: 1945
Made from material: reinforced concrete
GPS coordinates: 34.40067,132.45931
Latest update: May 17, 2025 10:36
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