On Friday, September 27, from 6:00 PM to 11:30 PM, researchers of the INFN Milano Unit, with the support of the Italian Association of Physics Students, will participate in the open night at the Leonardo da Vinci Museum of Science and Technology. They will offer a wide range of continuous activities: guided tours of the Extreme exhibition, live measurements of natural radioactivity and cosmic rays using different detectors, games, Lego bricks to explain nuclear isotopes, and other initiatives to showcase the research activities of our Institute. Admission is free. Here is the full program.