Through the implementation of this project, we aimed to strengthen mutual understanding, tolerance and dialogue among young people from Poland, Lithuania, Slovakia and Ukraine. The project was created as a response to current social challenges affecting young people, such as increasing intercultural tensions, prejudice, hate speech, disinformation, radicalisation and integration difficulties connected, among others, with the war in Ukraine and migration. We wanted to create a safe space where young people from different countries could meet, share their experiences, discuss difficult topics and learn how to cooperate across national, cultural and religious divisions. The main objective of the project was to show participants that diversity can be a value and that the shared history of the region can become a starting point for building a better future. An important element of the project was the reference to the heritage of the Polish-Lithuanian Commonwealth and the multicultural history of Lublin, which show that peaceful coexistence of different nations, cultures and religions was possible in the past and can also serve as an inspiration today. We wanted young people to better understand the importance of tolerance, dialogue and mutual respect in the context of contemporary European challenges. The project also aimed to develop participants’ social and civic competences. We wanted young people to strengthen their communication skills, teamwork, empathy, conflict resolution skills and active participation in social life. Another important objective was to develop critical thinking and resilience to information manipulation. Participants were expected to learn how to recognise false information, stereotypes, propaganda and narratives leading to prejudice and radicalisation. We also wanted to support young people with fewer opportunities, especially those coming from rural areas, small towns, communities at risk of social or economic exclusion, and young people affected by the consequences of war and migration. The project was designed to increase their self-confidence, sense of agency and motivation to act for the benefit of their local communities. The long-term objective was to prepare participants to become young leaders and ambassadors of tolerance, who after the project would promote dialogue, international cooperation, human rights and European values in their own environments.