The membrane constructions for the existing spa in Bad Fischau should be the attempt to complement original building fabric with new forms and materials and to improve the usability of the bath through constructions serving the purpose of weather protection. First and foremost, it seemed important to me to install architectural forms that are appropriate for the site - a spot where nature with its hot springs and water basins holds energy in abundance. Second, I was trying to find suitable architectural solutions for the existing historical buildings. Both requirements can be fulfilled with membrane constructions. I do justice to the site by using the form of membranes as the canvasses in front of the restaurant model the fluctuating waves in the water with the funnel construction in front of the café representing the springs. The final question which forms I am supposed or allowed to add to the existing buildings in the end proves superfluous as the form of a membrane, out of necessity, results from the construction.