For more than 30 years, the Fête de la Science has been in full swing every year for ten days in October. So, this year, a host of venues are offering conferences, exclusive events, workshops, laboratory visits and other discoveries through the prism of science, in libraries, universities and historic sites in and around the capital, from October 3 to 13, 2025.
There's no shortage of events in the Val-d'Oise region, particularly in Cergy, the department's prefecture. For Gallo-Roman enthusiasts, it's a chance to discover a site unique in the Île-de-France region: the Gallo-Roman sanctuary of Les Vaux-de-la-Celle.
Situated in a valley in the lower Seine valley, the archaeological site at Genainville preserves traces of a Gallo-Roman settlement with monumental remains. Discovered in 1935 and listed as a Monument Historique, the site continues to be explored today.
Fête de la Science 2025 in Paris and Ile-de-France: the program of free events
The Fête de la Science is back from October 3 to 13, 2025 for its 34th edition! The idea? A week dedicated to scientific culture, with numerous free events all over France. Experiments, shows, open houses, visits and a host of workshops, open to all and adapted to children, await you in the four corners of Paris and the Île-de-France region! [Read more]
In the footsteps of wall paintings
Walk through the archaeological site of Genainville, where wall paintings preserved at the Musée archéologique du Val d'Oise have been unearthed. Learn about the context of their discovery and the restoration project currently underway, to understand the challenges of heritage conservation.
The fresco technique
Discover Gallo-Roman fresco painting techniques and paint your own a fresco motif.
The Gallo-Roman sanctuary of Genainville
In Genainville, plunge into the heart of Antiquity with a sanctuary dating from the 2nd century AD. Temples, pools and a show building testify to the importance of this sacred site in Gallo-Roman times.
Restoration of wall paintings at the Genainville sanctuary
The Centre d'Étude des Peintures Murales Romaines is an archaeological research laboratory specializing in the treatment of wall paintings and stucco from the Roman period. The painted plasterwork on the Genainville archaeological site, preserved by the Musée archéologique du Val d'Oise, is currently undergoing restoration. Discover the exciting stages of this restoration and its progress.
With the Centre d'Étude des Peintures Murales Romaines (CEPMR)
Dates and Opening Time
On October 4, 2025
Location
Gallo-Roman sanctuary of Vaux de la Celle
Rue de Champagne
95420 Genainville
Prices
Free
Official website
www.fetedelascience.fr
Fête de la Science 2025 in Paris and Ile-de-France: the program of free events
