As the recipient of New Zealand’s only 6 Green Star (Design) rating, Geyser significantly advances the cause of sustainable architecture. Passive environmental design principles and computer-controlled systems combine to provide pleasant and comfortable working and circulation spaces. Natural daylight is admitted deep into the interior, and a twin-wall façade generates natural heating, by trapping warm air, and cooling ventilation, via convection currents. A manually operated inner façade allows tenants some discretion in controlling their own working environments.