The building consists of two concrete walls supporting a long, diamond-shaped roof. Between the gable walls, glass facades span freely, creating spaces for the restrooms and a waiting room with seating for 24 people. Unlike a traditional pitched roof, here the roof line is mirrored, forming a diamond shape that opens to the sky, while creating a human scale. As the roof is the primary element of the building, the architects needed a cladding material that would function equally well as a roof cladding and as a ceiling. A material was also needed that could be detailed with a high level of precision as the architects wanted the roof to register as a single, monolithic volume. Furthermore, the ceiling of the long waiting room also had to function as an acoustic element and, at the same time, allow for integrated lighting. Swisspearl created both the necessary aesthetic and functional properties. The choice of fibre cement Swisspearl panels made it possible to use perforated panels in the ceiling that function as a light source.