The article aims to discuss the concept of political culture as a powerful tool for shaping thoughts and actions of individuals and communities (societies). By elaborating on the Jagiellonian Idea (JI) - its specific features and implementation, the author seeks to provide answers to several questions including: what made the JI a vibrant political and social concept being undertaken over centuries by some politicians, social leaders, researchers and scholars – is it just an attractive narrative which recalls times when Poland was a powerful state or is it a realistic program still applicable to contemporary societies? What kind of features of the JI concept may be selected, adjusted and developed today in the international and intercivizational dimensions? If at all possible, thus by what kind of means and under what conditions? These and other aspects of the JI as a specific expression of political culture are the core of the article.