In the last few decades, art has moved from museums, collections, and art galleries to the streets to take over the city. Visionary artists, gifted with breath-taking expressiveness, have converted the spaces where everyday life takes place - which are often featureless and abandoned - to a new palette, in a new way of expressing their ideas. Once again, art breaks the mold and speaks directly to the audience, without intermediary channels or filters. Social themes, political criticism, and poetry materialize on a bridge, on the facade of an old building, between the railings of a courtyard. This volume leads us to discover the phenomenon of street art and includes an introduction by Chris Versteeg, an expert in this and in graphic design. Here he inquires into the origins and sources of inspiration for this form of contemporary art, and presents the main groupings within it. Twenty of the greatest figures on the current world street art scene, from Banksy to Shepard Fairey, from Vhils to Alex Vau, will then take the floor, thanks to the interviews by Alessandra Mattanza, a multifaceted and talented journalist who is an expert in contemporary art. The artists will thus directly relate their stories to the readers, introducing them to the rational and ideas inspiring them, and enabling them to live directly the creative process leading to the forming of the final message. -- front insert