The Berlin-based street art crew Mentalgassi did a nice job at the Alexanderplatz in the heart of Berlin. They created so-called “Flip-Images”, large-scale image-installations which make it possible for the public to see different images from different perspectives.
Mentalgassi are well-known for their oversized paste-ups, showing expressive, crazy faces of their friends. In the past, they also experimented with concrete, stickers and X-films, self-sticking color transparencies, for the ticket validators on the Berlin subway-stations.
