The Open Day is a traditional event held at the beginning of the autumn semester, prepared exclusively by students. Visitors, high-schoolers, could learn about the study of physics, nanotechnology, biophysics, teaching, and other physics-related fields directly from students who are already studying these fields. Our students introduced the study options and the research of the individual physics departments. For those interested, there was a guided tour through selected laboratories, such as the thin film magnetron sputtering laboratories. Various small but interesting demonstrations and experiments from the world of physics accompanied the whole program.