On July 27th, 2017, an educational event titled “Brain on Vacations” was held at the Hydrobiological Station of the Nencki Institute in Mikolajki. It was already the third edition, as a continuation of “the Holiday Days of Brain”, organized by the Nencki Institute and the Hydrobiological Station in Mikolajki. The show included the neuroanatomical exhibition “Explore the inside of the brain“, showing the brain from the outside and from the inside, games and tests for children and adults prepared by PhD students and staff of the Nencki Institute. For a few hours we were visited by about 70 people.