Ouvrage Cap Martin

The underground fortress spans a network of corridors extending 25 meters below ground, featuring three steel observation bells protruding through surface vegetation.

Built between 1930 and 1933, this fortification formed part of the Maginot Line defense system and faced direct combat during the Italian invasion of France.

The fort maintains numerous original military artifacts, equipment, and facilities, including an operating theater and a large-scale kitchen that served 1000 meals daily.

Tours require warm clothing due to constant 16-degree Celsius temperatures, and sturdy footwear for navigating multiple stairways throughout the structure.

The fortress incorporated naval terminology in its design, using terms like gangways instead of corridors, reflecting its submarine-like confined operating conditions.

Location: Menton

Part of: Italian invasion of France

GPS coordinates: 43.75583,7.48083

Latest update: June 23, 2025 09:39