From October 1st to 4th, 2026, Paris will host a range of free events and activities for visitors and locals alike. At the 6b in Saint-Denis, a former Alstom office building now transformed into a living space for around 200 residents, including artists, artisans, and associations, approximately sixty of them will open their workshops to the public on October 3rd. Visitors can explore the creative processes of these residents, view a collective exhibition on the first floor, and shop at a temporary store. Free activities include contributing to a participatory installation or mural, drawing an edible map, and an introduction to Krump, a dynamic street dance style. Additional events include a brass band performance, karaoke, live performances, and DJ sets. Reservations can be made at exploreparis.com/fr/115_le-6b. The Eco Book and Press Festival will take place, featuring around forty exhibitors, including publishers, associations, and authors. On October 3rd at 12:00, Polytechnic Jeanne Mermet will discuss her essay Désertons (published by Wildproject). A debate titled "What to do when the far right takes over ecology?" will bring together author and publisher Hugues Jallon and sociologist Erwan Lecœur on October 4th at 14:45. On Saturday evening, Mathieu Dalmais will present a gestural conference on food security and social insurance at 18:00, followed by a comedy club show at 20:30. Other activities include a mural on ecofeminism on October 4th at 15:00 and child-friendly workshops. The Science Festival at the Collège de France will run until October 12th. On October 3rd, visitors can participate in free experiments with researchers in neuroscience, physics (including superconductors), cells, and biodiversity. Guided tours of labs that are usually closed to the public are also available by reservation. Children over eight years old can take part in a scavenger hunt to find a bust of Claude Bernard, a notable French physiologist. Information can be obtained by calling 01 44 27 12 11. Every Thursday, the Maison du jardinage in Bercy Park offers a free workshop in its vegetable garden. Participants can engage in seasonal gardening tasks and receive professional advice from a gardener. If it rains, the activity will be held in the greenhouse. Registration is required, and participants should come with appropriate clothing, including gloves if possible. There is no changing room or space to leave personal belongings. The event takes place from 14:00 to 15:30 at 41, rue Paul-Belmondo, 12e. Contact details: 01 53 46 19 19. The Botanical Village offers hands-on activities such as grafting peonies, making a terrarium, and exploring the bonsai collection. Over the weekend, the Park Floral will host events tailored for children, including games, tree climbing (for those aged seven and older), storytelling sessions, and repotting workshops. Registration is required at the entrance of the 31-hectare park. Contact details: 01 49 57 25 50.