The European Heritage Days (JEP) 2026 take place on Saturday, September 19 and Sunday, September 20, for their 43rd edition. The national and European themes focus on the heritage of photography and heritage in danger. According to franceinfo.fr, hundreds of nature-focused visits are on the program, including rivers, forests, wetlands, coastal areas and mountains, in order to highlight their biodiversity. The League for the Protection of Birds (LPO) is actively participating with concrete activities: guided tours near pink flamingos and herons in the Vigueirat marshes reserve (Bouches-du-Rhône), ornithological encounters at the Royal Saltworks of Arc-et-Senans (Doubs), walks on migration at the Pointe de l'Aiguillon (Vendée), bird refuge at the Chinon fortress (Indre-et-Loire) and hiking in the Gardiole massif (Hérault). Other sites such as the Dives marshes in Normandy or the observatory of Lake Bourget in Savoie are also mentioned. Official sources from the Ministry of Culture and info.gouv.fr confirm the dates and the scale of the event, with millions of visits recorded in previous years. Regional natural parks, such as that of the Haute Vallée de Chevreuse, include walks and nature outings in their programming. No contradiction appears in the sources consulted. The figures of "several hundred" nature visits and "nearly 30,000 events" come directly from the franceinfo article, without additional detail in the official press releases consulted. The information is established and consistent with the usual participation of natural spaces in the JEP. Provisional conclusion: the statement is factual and well supported by the program of the 2026 edition.