This year the ZKM celebrates its 30th anniversary and takes the opportunity to retell the history of art in the 20th and 21st centuries by exhibiting its collection, which is considered one of the most important media art collections in the world. It includes photography, graphics, painting and sculpture as well as computer-based works, film, holography, kinetic art, op-art, sound art, visual poetry and video art. The ZKM also shows how artists anticipate media and social practices that will only become self-evident for society in general years later – they write the history of the future.