In his second book on street art, Michael Harker once again travels to the most diverse centres for this art of the street.The varied structure of the topics with fascinating large-format photographs shows examples from Paris, Lisbon, Rome, Singapore, Vienna, Turin, São Paulo... and other places, and brings together works by numerous artists. The artists use different stylistic devices to convey their messages.More and more international festivals are emerging as promoters of street art.Pars pro toto, the book presents the ‘Calle Libre’ festival, which has been taking place in Vienna since 2014.Inspiring images familiarise the reader with the world's largest gallery.Informative and scrutinising texts are combined with quotes and excerpts from interviews.The book encourages readers to see street art from a new perspective and to discover cities in new, less familiar ways. Text in English and German.