The Windoor Wind Tunnel at Cornellà is a free fall simulation facility located in Cornellà de Llobregat, near Barcelona. It uses powerful fans to generate an upward air stream, allowing users to experience the feeling of flying in a safe environment. It is used by beginners and experienced parachutists to train and improve their flying skills. For the construction of the façade made of aluminium composite panels,STACBOND’s “Golden pearl” and “Anthracite gray” finishes were chosen.