Tatsuo Shirai, Tomoyuki Asano, Hirofumi Fujita, Anri Ito (MHS PLANNERS, ARCHITECTS & ENGINEERS)

The building's primary energy consumption was reduced by 79% at the time
of design and 81% at the time of completion compared to a standard government building, thanks to an air conditioning system that uses groundwater, a lighting system that allows natural light and ventilation, solar radiation shielding with wooden lattices and eaves, energy conservation with high thermal insulation, and energy creation.
The town's citizens' plaza, which covers one-third of the building's floor space, is made of glass so that residents can cl early see the bustle of interactions and events from the outside, and the design conveys a sense of unity between the town hall and the town.