The formerly outdoor pool of the Roman hot springs in Baden near Vienna was covered with a glass roof thus creating a spacious transparent indoor swimming hall as the central element of a modern spa.
Simple steel ribbons span across almost 30 m in 1.50 m intervals and create the minimized and filigree structure for the roof. Inclined Y-supports deviate the tensioned stress-ribbons towards the facade thus creating the facade profiles anchored by tensioning anchors in the solid basement. This resulted in a highly transparent structure with the clearly visible flow of forces.