Fort du Mont Verdun

Fort du Mont Verdun is a five-sided military fortress located at 630 meters altitude north of Lyon, with covered trenches and reinforced barrack levels. The complex includes 14 artillery positions and separate ammunition storage facilities arranged to support defensive operations.

The fortress was built starting in 1874 as part of Lyon's outer defensive ring and reinforced with advanced concrete techniques in the 1880s. This construction reflects how French military architecture evolved during the late 1800s toward more sophisticated fortification methods.

The fort reflects the evolution of French military architecture, transforming from a 19th-century defensive structure into a modern air force command center.

Visitors should expect steep terrain and elevation changes since the site sits on a ridge and requires walking to reach key areas. Comfortable footwear and extra time to explore the multiple levels are recommended.

The site now houses an air force base with a distinctive radar dome visible from Lyon that serves as a national air operations control center. This transformation shows how a 19th-century defensive structure continues to play an active military role today.

Location: Poleymieux-au-Mont-d'Or

Inception: 1874

Capacity: 500

Part of: second belt of Lyon

Address: 69250 Poleymieux-au-Mont-d'Or, France

GPS coordinates: 45.84920,4.77950

Latest update: December 14, 2025 11:01