Block9 co-founders Gideon Berger and Steven Gallagher explain how they built the monolithic IICON stage at Glastonbury in this exclusive video shot by Dezeen at the famous music festival. IICON is a vast sculptural stage and outdoor dance arena by London creative partnership Block9, which debuted at Glastonbury festival in Somerset, UK, last weekend. The focal point of the structure is an enormous diagonally-tilted head with a cubical volume inset where its facial features should appear.