The present study aimed to determine the degree to which play elements have an “open function”, and whether children are attracted to them. The architect van Eyck hypothesized that play elements with an open function attract playing children because such elements do not suggest a certain type of behavior and are, thus, likely to stimulate the children’s creativity. Children of three different age groups (5-6, 7-8, and 11-12years of age) played freely in a Parkour