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Saint-Gobain Fort

Saint-Gobain military fort and museum in Modane - JP Gautronnet

Part of the Maginot Line in the Alps, Fort Saint-Gobain is a 1939-45 wartime structure in a unique state of preservation. A veritable land-based "submarine", it enabled its crew to live in total autarky for over 3 months.


After crossing the drawbridge, visitors can explore the galleries, barracks and technical rooms that enabled a crew to live in autarky for 3 months in case of need.
The tour follows a signposted route, with explanatory panels in 3 languages (French-Italian-English).
The temperature remains constant at around 12°C in July and August. Warm clothing is therefore essential.


  • Guided group tours
  • Free individual visits


  • In the mountains
  • Village at -2 km


Plein tarif : 8 €
Groupe adultes : 6 €.

Gratuit pour les moins de 15 ans.
Tarif groupe à partir de 15 personnes.

Tarif Pass HMV : 6 € au lieu de 8 €.

Methods of payment

  • Credit card
  • Check
  • Species

Opening period

Du 15/06 au 15/09
Ouverture le lundi, jeudi, vendredi, samedi et dimanche de 9h à 12h et de 14h à 18h30. Le mercredi de 9h à 12h.
Fermé le mardi.

Spoken languages

  • English
  • French
  • Italian


Additional reservation

Reservations for groups recommended.


Animals accepted : No

Saint-Gobain Fort
  • Private museum
Route d'Aussois - D 215 73500 Villarodin-Bourget