With its multiple platforms and climbs, the Observer attracts world explorers among school age children. The variety of thrilling climbs and crawls via nets, steps, ladders, horizontal and tilted floors and climbing tubes stimulate children’s balance and cross-coordination, and the proprioception: The variety of inclined, straight, swaying and firm climbs provide fun challenges for all. It gives ways up and around the Observer for bigger and lesser dare devils. The motor skills trained are important for children’s physical confidence and their security in moving, for instance in the street. The senses of balance and space are trained whizzing down the slide. The sense of balance is fundamental for all other physical skills. The platforms and nets are nice meeting points for socializing with friends.