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Musée de la Diana

Archaeological museum of the Société historique du Forez, in the medieval building of La Diana in Montbrison, with its heraldic hall.

Opening hoursAdmission €2.50
Musée de la DianaOpening hoursAdmission €2.50
Limited operations. According to the Loire Forez tourist office, the heraldic hall has been under restoration since January 2026; La Diana welcomes visitors as far as possible, following safety rules.

About the museum

La Diana is the seat of the Société historique et archéologique du Forez, founded in 1862 in Montbrison and recognized as a public-interest organization. The building, a former canons’ cloister, houses a large hall built around 1295 under John I of Forez. It served as meeting place for the Estates of Forez until 1531; its wooden vault is covered with 1,728 painted coats of arms, and a frieze of 242 coats of arms mixed with fantastic animals runs along the springing of the vaults.

Devastated during the Revolution and turned into a stable and barn, the building was bought back in 1862 with the support of the Duke of Persigny, then restored between 1863 and 1865 in neo-Gothic style. The learned society installed a rich library, archives and an archaeological museum there, which opened in the 1880s.

The museum’s display cases present Neolithic, protohistoric, Gallo-Roman and medieval finds from Forez, and address themes such as arms, adornment, trade, hunting, fishing, daily life and ceramics.

Highlights

  • Medieval heraldic hall from around 1295, with a wooden vault decorated with 1,728 coats of arms
  • Frieze of 242 coats of arms intertwined with fantastic animals
  • Archaeological collections of Forez, from the Neolithic to the Middle Ages
  • Heritage library and archives of the learned society

Permanent exhibition

  • Salle héraldique de la Diana – Large medieval hall with a wooden vault decorated with 1,728 painted coats of arms, including those of families allied to the counts of Forez.
Operated by
Société historique et archéologique du Forez (La Diana)

Admission & discounts

Adults€2.50
Children & teensfreefree up to age 11 · Free admission for under-12s.
Guided tour (adult)€5

Prices provided by the Loire Forez tourist office: €2.50 for a self-guided visit and €5 for a guided visit.

Accessibility

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Amenities & dining

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Events & venue rental

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Plan your visit

Guided toursyes
School programsyes
Good to knowEducational workshops “Découverte du musée archéologique” (a discovery rally of about 1 hour 30 minutes, duration adjustable) are offered to school classes, by reservation at +33 4 77 96 96 14; €110 per class and per activity.

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