The wind tunnel building is a reinforced-concrete structure with the walls and ceilings of various thickness. Its shape resembles that of a cuboid with the base measuring 33m x 22 m and with the height of 38m, including 11m above ground level. The structure consists of an internal solid having the shape of a cylindrical tube, formed by a square with the side length of 7.5 m. The tube is 32 meters in height and 15 m in width and contains the core technology of the vertical wind tunnel. Around the tube, there are spirally arranged rooms (3 - 4.5 m in width), including: the reception, office and hotel rooms, conference facilities, bathrooms, dressing rooms. The rooms can be accessed from the entrance hall using the inclined corridor, which ascends gradually leading to the flying hall. This is where the key feature of the building is located, i.e. the glass cylinder, which forms part of the cubature. Inside it, powerful units generate wind moving upwards at 300 km/h, thanks to which people are lifted up several to more than a dozen metres. This and associations with 'floating' kites or plastic supermarket bags – the latter perhaps invoking less friendly associations – were the key inspiration in designing the external form of the building.

The location was crucial, too. The chaotic urban sprawl at the intersection of the motorway and expressway and the fleeting, fragmentary perception of the area encouraged us to propose a distinctive and autonomous form. We were also able to minimise the environmental impact of the building thanks to the availability of the road system, power lines and a concrete plant, as well as the possibility of rainwater retention and disposal of excavated soil. This, along with the energy savings during the construction and operation of the facility – closed air stream circulation and re-use of related heat – enabled us to ensure a highly balanced relationship between the building and the environment.

Another challenge in the building, which had an ambition of showing the struggle between the force of wind and gravity, was the choice of material. Initially, we considered using high-tech structural textiles. Yet, considering the functional and economic requirements we decided to use reinforced concrete, which allowed the building to accommodate more functions and, given its mass, ensured a stable air stream, creating optimal conditions for the use of the wind tunnel – fully controlled upward and downward movement of people.