Opened in 1833 and rebuilt after its near-destruction during the Second World War, Teatr Wielki Opera Narodowa (TWON, the Grand Theatre of the National Opera) in Warsaw, Poland, has the largest stage in Europe. Measuring 36.5m x 35m and with a volume of 38,000m3, the size of the stage has contributed to many sound-related issues. To overcome them, a Yamaha AFC3 system was chosen for one of the largest acoustic enhancement installations in the world, designed and realised by a true team effort.