3D Illusions By Kurt Wenner

1987, Masterpieces in Chalk the National Geographic documentary featuring Wenner's work in Europe won first place in the fine arts division at the New York Film Festival, and in 1991, Swiss-German Television created a 45-minute documentary on his work in Italy.
1996, Wenner created a print ad for Absolut Vodka as part of its prestigious artist ad series. The ad is known as Absolut Wenner and the creation of the image was produced as a television commercial.
2010, a Greenpeace called for a ban of genetically modified crops and presented the EU members in Brussels with 1 million signatures along with a 22 meter by 22 meter 3D Wenner image. The giant composition set a world record for the largest image of its kind drawn by a single person.