Saint-Siméon-de-Bressieux: Silk Weaving, Marshland and Half-Timbering

Saint-Siméon-de-Bressieux offers two distinct focal points for planning your trip: the history of the Girodon silk mill and the marshland landscape of the Tourbière des Planchettes. There is also a historic half-timbered and earth-built house, walking trails and information about visits. If you are planning a stay, you can decide in advance whether you are more interested in architectural history, a walk in nature, or both.

Silk Mill and Workers’ Town

With the opening of the Girodon silk mill, Saint-Siméon-de-Bressieux became a workers’ community in the 19th century. The present-day buildings of the Manufacture de soierie et cité ouvrière Girodon were built between 1873 and 1875. On 17 July 1990, the silk mill and workers’ town were listed as historic monuments. This makes it possible to consider the development of the community, the period when the buildings were constructed, and their subsequent listing as three distinct historical aspects.

The silk mill consists of two building sections connected by a central glass canopy. A workers’ boarding house, built from rammed earth, was added in 1875. These details add the physical layout of the workers’ town to the history of production. For visitors interested in industrial history, the complex therefore offers more than a single building: the documented details include the layout of the buildings, the glass canopy and the workers’ boarding house.

Another historic building is the Maison en torchis, a former tannery dating from the 17th century. It was built entirely from earth and timber framing and restored while preserving traditional building techniques. The tourist description dated 5 February 2025 mentions both its former use and the restoration method. Together with the Girodon complex, the house broadens the picture of local architectural history to include a different century and a different use.

Marshland and Walking Trails

In a classification updated in January 2025, the Tourbière des Planchettes is designated an Espace naturel sensible (ENS), with site code SL040. The habitats listed include marshland, ponds and heathland. The discovery trail passes through the forest to a boardwalk over the marsh, from where the landscape can be observed up close. The car park is signposted from Saint-Siméon-de-Bressieux. This information comes from visitor information updated on 13 April 2026.

There is also a marked circular trail at the peat bog, with an estimated duration of two hours; this information appears in a tourism description updated on 16 December 2025. Another circular trail, “De soieries en châteaux,” is moderately difficult, 6.1 kilometres long and also takes about two hours. The description dated 18 December 2025 lists architectural heritage dating from the Middle Ages to the 19th century as its focus. The trail is marked with yellow signs for “Promenade et Randonnée.” The time estimates are similar for planning purposes; the “De soieries en châteaux” trail also includes details on distance, difficulty and marking.

Visits and Local Production

The Eglise St Siméon is open during the day. The opening information from August 2026 states that it is open during the day; check opening hours locally before your arrival. This will help you coordinate your visit with the other stops during your stay.

Moulin Pion Vignon produces walnut and hazelnut oil in a traditional water mill. The tourist information was updated in November 2025; check the current visiting arrangements before your visit. This means that, alongside architecture and nature, the production of regional oils is another distinct option to consider when planning your trip.

Discover More Destinations

Discover more destinations: Reventin-Vaugris, Le Pont-De-Beauvoisin, Thodure, Villette-D'anthon, Vénosc, Charantonnay, Bilieu, Treffort

Back to the main travel overview: Isere.