MAX IV Laboratory welcomed nearly 1000 visitors on Open Day, the facility’s first major public event in five years. A fantastic lineup of interactive science stations with enthusiastic staff engaged guests inside the experimental hall of the large ring. In the mix, exhibitor booths, Vattenhallen, the Lund Robotics group with Buster the dog, Tetrapak, ESS, Kraftringen, Nano Lund, Medicon Village, and the Uppåkra archaeological group, drew interesting discussion.