The structure consists of a shell of reinforced concrete with four segments that extend outward from a central point. The concrete “wings” then unfold on either side of the exterior, preparing for flight. Within the concrete, the structure is reinforced with a web of steel. The large panels of glass beneath the concrete are also supported with steel, and have a contemporary purple-tint. These glass walls are tilted towards the exterior at an angle as they reach the ceiling, as if intended for viewers to imagine looking out from a plane to the earth below. These windows also highlight the purpose of the structure, providing views of departing and arriving jets.