The exhibition on Lucky Luke's creator Morris becomes a day-long Halloween-tinged birthday festival for the cowboy's 80th anniversary. Curator-led tours and a French-language tour require registration. Children can join a quiz, a hobby-horse-riding competition with handmade horses, a costume look-alike contest, craft and coloring stations, a photo corner, a button-making machine and a retro computer game. A panel brings together comic creators Jul and Achdé with Lucky Luke expert Klaus Jöken, plus a birthday cake cutting.

Details can change — check the event’s website before you go.