New Zealand's first commercial earth-bank building, an early childhood centre in Kawakawa, has been awarded Green Star status.
Te Mirumiru, which is owned by the Ngati Hine Health Trust, is the first 6 Green Star education building in the country.
According to New Zealand Green Building Council chief executive Alex Cutler, the innovative building is an example of world leadership in sustainable construction.
The building had a gently curved concrete structure covered by earth and grass on its roof and unglazed sides, integrating it with the landscape and paying homage to Ngati Hine's customs and history.
Ms Cutler said Te Mirumiru was not only beautiful and technically accomplished, but also proved the health and education benefits of working and learning in a green building.