Ralph Bänziger, a young man working for the architect Walter Moser, was tasked with designing the estate’s schoolyard. Bänziger came up with three concrete loops that could be entered and walked around. Varying in tone from ‘brut’ to washed-out terracotta, the playsculpture blends elegantly into the schoolyard as well as the pre-existing wall separating the school from the residential area. The original setting also included a shallow pool, but this soon proved too expensive to maintain. Bänziger’s congenial loops were an instant hit. Though not quite in the way he had intended.