|World War II Bunker Subterranean fortress from World War II
|Incandescent Electric Light System
|As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
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|DEC-1939 to 1945
|between 130 and 240 men lived there to protect the border.
|opened to the public.
The fortress of Pré-Giroud was built to protect the border between France and Switzerland.