The Heritage Days will take place on the weekend of September 19–20, 2026, in Paris and the Île-de-France region. For its 43rd edition, the commune of Thomery in Seine-et-Marne (77) is offering a slate of tours and activities to discover its treasures.
In Thomery, the 2026 Saint-Jean Festival continues the tradition of popular early-summer gatherings. Due to the heatwave affecting the Île-de-France region, all festivities are cancelled for this edition of the Saint-Jean Festival 2026.
