This document outlines a project between several European schools aimed at promoting global citizenship, mutual understanding, and sustainable development. The project involved cooperative work between students from Spain, France, Portugal, and Poland on topics like gender equality, migration, minorities, and the Holocaust. Activities included student exchanges, online collaboration, video conferences, and exhibitions. A key activity was a visit by students to Auschwitz concentration camp to learn about the Holocaust and importance of tolerance. The goal of the project was to prevent future intolerance through developing understanding between cultures.