Monthly rendez‑vous The second Saturday of the month A DIY exploration zone was designed specifically for families and includes various activities to spark curiosity, dialogue, and creativity. Every second Saturday of the month, the Planétarium is offering free activities all day long. Our teams create themes that change with the seasons and that are based on available materials. This creates an experience that is both ever-changing and exciting and is a great way for families to make the most of their visit. This season at the Planétarium Build you own rover robot with Marsmobile and let your imagination run wild in the building area full of bricks and technical parts! Build spaceships, space stations, and any other intergalactic inventions! No reservation required. For ages 6 to 12. A sensory exploration zone for children aged 0 to 5 is also open all day.