Reed, soil, clay and silt are all the ingredients that helped mould the Austria Pavilion’s 38 cones at Expo 2020 Dubai. Though it lacks air-conditioning, the building is quite pleasant within. The secret? It is the simple yet often overlooked science of wind harnessing architecture. In fact, Helmut Döller, Deputy Commissioner General of the pavilion, tells the media on Tuesday that Querkraft Architekten took inspiration from the Arabian wind towers for the world fair project. So you feel relatively less warm in here because cool air flows in and sinks, while the hot air currents escape from the openings in the cones.