"Green Airport" by Albus Oscar was designed and modelled to experiment with how to design an integrated system like a mini-city adopting 100% renewable energy, with every facility would be within 15 mins walk in order to cut down carbon emissions. the form of this design was inspired by lone fungi. The arrival/departure lobby would be ventilated by cross ventilation with the support of the wind-catcher. Besides, a vertical shaft was designed to let go of the hot air upward by natural convection to external. The top of the roof would serve as the solar energy collecting panel.