In a private villa in Brussels, the need to create a utility space for the swimming pool prompted Lhoas & Lhoas Architectes to create a small, sculptural, monolithic piece of architecture. It is inspired by prefabricated plaster cabins, and is made of cement, polished on one side and rough on the other. The volume has six sides and is characterised by concave walls, to make the architectural object less massive from the outside. The sculpture continually redraws itself according to the rays of the sun, thanks to its own shadows and the shadows cast. At the top of the block we find a skylight, which is the only opening that allows natural light to enter the interior, and a beam, which rests gently and is used only as a compositional event, losing its structural function. The metal element is clearly disproportionate to its function, which is to support a swing.