During the 1920s Fortuny's contribution to the theatre gained widespread recognition. After studying and perfecting his dome, its use was becoming more popular in many theatres in Europe. He was soon contracted to install his dome in the famous opera house, La Scala of Milan. However, for this project he was required to make some adaptations for the dome to be used at its maximum potential. The theatre was much larger than his original dome so he increased the size so that he could allow the dome to fill the space of the stage completely. He also made it so that the dome was "electrically controlled and could fold and unfold like a giant accordion in the space of 90 seconds. Even more impressively, he invented a suction fan, specifically for this project, which forced out the air so as to keep the structure taut. From the audience’s point of view this helped the backdrop’s depth to seem almost infinite as if you were looking at a night sky that never ended. After all the adaptations were made and the construction was completed, the dome successfully opened on 7 January 1922, with a production of Parsifal.