As part of the celebrations for 100 years of Amsterdam’s Vondelpark in 1965, the Vondelpark was transformed into a massive sculpture garden under the direction of Stedelijk Museum director Sandberg. 25 epic artworks by well-known artists such as Pablo Picasso, Alexander Calder, Henry Moore, Shinkichi Tajiri and Jean Tinguely were placed in the park. Karel Appel was also represented, by a gigantic elm tree trunk brightly painted in Appel’s characteristic manner.