Fermont Fortification

Gros Ouvrage du FERMONT (A2). Source :

Fermont Fort, located 5km east of Longuyon in the north of the Meurthe et Moselle, ranks with Simershof and Hackenberg among the Maginot line's largest fortifications.


Fermont Fort, located 5km east of Longuyon in the north of the Meurthe et Moselle, an area popular with tourists known as the "triangle of fire", ranks with Simershof and Hackenberg among the largest Maginot line fortifications to be open to the public.


This large fortification, built between May 1931 and February 1936 is part of La Crusnes fortified area. It is made up of seven combat blocks and two entrance blocks (for men and ammunition) linked by a network of over two kilometres of underground passageways.



In June 1940, under the command of Captain Aubert, the fort valiantly resisted several attacks by the Germans. On 17 June combat block no. 4 was attacked unsuccessfully. Another assault four days later against the entire fortification resulted in the loss of 80 soldiers (killed or wounded) on the German side and just one fatality and one serious injury on the French side. Although undefeated, the soldiers of Fermont Fort crew were obliged by orders from French command to surrender on 27 June 1940.


At the entrance to the fortification, a memorial in memory of the troops "delivered unbeaten to the enemy" is a just reminder that the majority of the fortifications on the Maginot line were still standing firm in the face of the enemy when the Armistice took effect on 25 June 1940.


The French Ministry of Defence, which owns the 27-hectare site, passed its upkeep, management and promotion to the Friends of Fort Fermont Fortification and the Maginot Line Association (AAOFLM) in 1975.

The site, which has been open to the public since 12 June 1977, is visited by an average of 20,000 people each year. The two-hour trip begins in front of the munitions entrance. Visitors enters a goods lift to travel 30 metres underground to the heart of the fortification, and are then directed towards the munitions magazine (M1), within which a museum depicting the daily life of the crew of the fort has been created. They then travel on a small train - an authentic shunter - to combat block no. 4. From outside the fortification, on the top of the structure, visitors can admire an impressive artillery bunker with 3 crenels measuring 75mm. A few hundred meters beyond lies no. 1 block with its 75mm turret.


After walking outside, visitors return inside the fortification. They board another small train to the barracks and electricity plant with its four 225 horsepower diesel generators, designed for use should the external electricity supply have been cut off. The conclusion to the visit is the exterior museum featuring a large number of artillery exhibits, including three turrets recovered from Brehain fortification (around 12km south-east of Longwy, on the plateau which faces Luxembourg).


During the summer, the association organises a number of events in addition to these visits. In August 2003 the Fermont Fortification was transformed into a giant exhibition venue for the work of contemporary artists from the region. It was also completely metamorphosed in March 2003 when a part of Olivier Dahan's film "Crimson Rivers 2: Angels of the Apocalypse" was filmed there with Christopher Lee, Jean Réno and Benoît Magimet. The Meurthe et Moselle Departmental Council was conscious of the need to preserve the fortification without damaging it. It commissioned a study into realising the potential of Fermont Fort from a specialised consultancy, which resulted in a credible, sustainable plan for the promotion of the site as a tourist attraction.


Fremont Fort

Contacts: Friends of Fort Fermont fortification and the Maginot Line association

9, rue Albert Lebrun 54260 LONGUYON

Tel: +33 (0)3 82 39 35 34

Fax: +33 (0)3 82 39 26 46


Administration office staffed: Monday - Wednesday 2pm to 6pm and Friday 9am to 12pm and 2pm to 6pm.


Please wear warm clothing and suitable shoes.

Allow two hours for your visit.


Opening hours and tours:

1 - 30 April Saturday, Sunday and bank holidays 2pm to 3.30pm

1 May to 30 June one single visit Monday to Friday at 3pm, Saturdays, Sundays and bank holidays 2pm to 3.30pm

1 July to 31 August every day from 2pm to 4.30pm

1 September to 3rd weekend in the month open every day, visits at 2pm and 3.30pm

3rd weekend in September to 31 October Saturdays and Sundays, visits at 2.30pm and 4pm

Open every day all year round for groups, by appointment with the administration office.

Entrance: Adults: €8, Children aged 7-12: €5 Group: €6 (30 people minimum)


Official Fermont Fort website


Fortweb website on European fortifications

  • Ouvrage de Fermont. Source : AAOFLM - Clément Henrion

  • Ouvrage de Fermont. Source : AAOFLM - Clément Henrion

  • L'ouvrage de Fermont. Photo ECPAd

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    Practical information


    03 82 39 35 34


    Adulte : 8 € Enfant de 7 à 12 ans : 5 € Enfant de moins de 7 ans : gratuit Groupe à partir de 30 personnes: 6 € par visiteur Groupes de moins de 30 personnes: forfait de 180 €

    Weekly opening hours