The building activities of Leonello essentially made Ferrara into a humanistic center as the reformation of the University of Ferrara not only attracted students, scholars, and philosophers from all over Europe, but the burgeoning of artistic advancements in art and architecture also allowed artists to fully develop themselves within the city. Its environment naturally became an artistic center for later artists, which led to further developments in art and music in the 15th century. The gradual series of reformation ultimately turned Ferrara into a significant heritage site in Europe and now Ferrara is listed as one of UNESCO World Heritage Sites.