Federation Square: Termite-Inspired Thermal Labyrinth

Federation Square in Melbourne, Australia, is a 38,000 m² art and media structure completed in 2002 that features what was the largest thermal labyrinth installed at the time of construction. Originally inspired by termite mounds, the design draws on diurnal temperature variations to achieve passive cooling and heating without mechanical air conditioning for the main atrium. The underground labyrinth works like the chambers within a termite mound: cool night air is drawn through a massive underground concrete structure that absorbs and stores the coolness. During the day, this stored thermal energy is released as air passes through the labyrinth, displacing warm air from the occupied spaces above through stack and wind effects. Heat gains rise through the building and are vented through open joints in the roof structure. The building also features a fractally-designed double skin facade that draws on nature's geometric patterns, further managing heat gain and ventilation. Both the thermal labyrinth and the fractal facade work together to condition the main atrium using only passive strategies. After more than twenty years of operation, the system continues to perform effectively—a testament to the durability and reliability of biomimetic passive strategies. Designed by Atelier 10 with LAB Architecture Studio and Bates Smart, the project demonstrates that even large public buildings can be conditioned through biological principles rather than energy-intensive mechanical systems.