Many people are surprised to discover that Gehry originally wanted the hall to be covered in stone. He changed his mind after some time (and prodding by civic leaders) — and decided to go with stainless steel. All the curves that Gehry envisioned made the building an extremely difficult one to construct. Gehry and his team had to use aerospace software called CATIA (Computer-Aided Three-Dimensional Interactive Application) to piece the steel beams together. In fact, the project was so historic and labor intensive that many of the steel workers signed their names on the structural beams. Also worth noticing is the exterior area of the Founders Room. Shortly after the opening of Walt Disney Concert Hall, tenants of the neighboring condos discovered that the glare from the building’s stainless steel heated up their rooms by as much as 15 degrees. The solution was to dull the surface and reduce glare with a new finish.