Twenty years after being opened by Chancellor Helmut Kohl, the Heinz Nixdorf MuseumForum in Paderborn, Germany, has celebrated its anniversary. It has developed an idea of an ‘Internet Wall’ that is 13 metres long and is designed to react to visitors coming near the display. One of the images shown is of the first webcam – the famous internet coffee pot. The area also has programming stations where visitors can sit to solve problems and react with the wall. Other demonstrations include examples of early computer games.