[ The grand opening ceremony of EXPO-2017 took place in Astana. The entire concept of the show was built on the geometry of round shapes, making reference to the main building in the form of a big sphere. The result was a vibrant performance using projections, holograms, kinetic devices, performances by artists and ended with a long fireworks display. This was one of the biggest shows, if not the biggest, that went down in the history of Kazakhstan ]