Fort Dorsner
- giromagny

Fort Dorsner


Although it was built at the same time as most of the other forts in Belfort's defensive belt, Fort Dorsner in Giromagny is unique in several respects. Firstly, its architecture differs from that of other Belfort fortifications. It is one of the few French forts to have an octagonal central courtyard and to be built of pink sandstone. Built between 1875 and 1879, it could house up to 650 men and around fifty artillery pieces. Its location close to the border gave it a strategic role. It guarded the road leading down from the Ballon d'Alsace to Belfort. It also prevented the stronghold of Belfort from being bypassed from the north. Its armament made it the most powerful fort in the fortress. In 1879, it received an unusual defence with the installation of two Mougin turrets. They were the first to be installed in France. This armament was supplemented by six casemates and two artillery batteries. Fort Dorsner was occupied by the German army from 1940 to 1944, serving as an observation post. Abandoned until 1988, it was bought by the town of Giromagny. The Fort Dorsner Association works on a daily basis to give it a new lease of life. Tours are available all year round for young and old alike. Numerous events are also organised, including concerts, exhibitions and themed evenings.
  • Secondary type: castles and defense sites



  • Listed or registered (CNMHS)

Languages spoken

  • French

Comfort and facilities

  • Pets accepted
  • Toilettes
  • Room rental

Opening hours

Open from early April to late October, guided tours by appointment (groups of 12 to 30 people)

In July and August: open on Wednesdays and Sundays from 2pm to 6pm (entrance closes at 5.15pm).

Original idea: take part in a guided night tour by oil lamp (see calendar)!


  • Base rate - full rate adult : from 4,00 € to 5,00 € - For over 12s
  • Child rate : from 2,00 € to 3,00 € - Children aged 6 to 12
  • Other rate : 10,00 € - Family rate 2 adults and 2 children under 12