The app is called Ac Tourist and can already be downloaded on Apple's smartphones (the version for Android devices is coming soon). "It is useful for tourists, but also for students, especially Millennials, who can learn the history of the city in a dynamic and fun way," explains Katherina Ufnarovskaia, 40, originally from St. Petersburg and at the top of society. With her are Nicola Bonerba, president of Ance Puglia and the Cypriot company Vergendo Ltd. In charge of the Michela di Vietro project, but among the volunteers and professionals involved the list is long. The app will also be available for Moscow, St. Petersburg, Barcelona and Amsterdam.