15 Swiss artists were invited to submit their projects. Studio Renée Levi from Basel was awarded the commission for the mosaic ‘Tilo’. Each element of the mosaic represents one of the 200 seats in the National Council and 46 seats in the Council of States. The title of the work was chosen in honour of Tilo Frey, who was one of the first eleven women to enter the National Council in 1971. She was also the first person of colour to take a seat in the Federal Assembly. The newly designed gable of the Parliament Building (the tympanum) symbolises a parliament in a state of constant change. The ceramic tiles reflect light both during the day and under illumination at night, lending the building a certain radiance. In addition, this visually creates movement in the static façade.
The work was unveiled at 18:48 on 12 September 2023 to mark the 175th anniversary of the Federal Constitution.