Fort de l'Infernet, Military fortification in Briançon, France.
This stone masonry fortress stands at 2,380 meters altitude on a rocky outcrop, commanding panoramic views over the Durance valley and surrounding alpine terrain in the French Alps.
Constructed between 1876 and 1878 as part of the Séré de Rivières defensive system, this fort served as France's last stone-built military installation before modern construction methods emerged.
The fortification represents the culmination of traditional French military engineering, showcasing cut stone masonry techniques that defined centuries of defensive architecture throughout the nation's history.
Access to the fort remains restricted due to safety concerns and preservation requirements, with no public tours currently available for visitors seeking to explore this remote alpine installation.
Fort de l'Infernet holds the distinction of being France's final fortress constructed entirely from cut stone masonry, marking the end of an architectural era in military construction.
GPS coordinates: 44.89423,6.68556
Latest update: July 25, 2025 20:49
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