The Kazakh pavilion was the heart of the EXPO 2017 in Astana. The ball-shaped construction of steel and glass with a diameter of 80 m had to be designed in a very short time and erected at temperatures as low as -40°C. In the upper part, there are two wind turbines, which contribute to the sustainable energy supply of the pavilion. (Copyright: Andreas Keller, Altdorf, see p. 125)