Te Ara is an online encyclopedia of New Zealand with over 3000 biographical stories and 30000 images. It covers a range of topics through the sections including:
Māori New Zealanders
New Zealand Peoples
Earth, Sea, Sky
The Bush
Settled Landscape
Economy
Social Connections
Government and Nation
Daily Life, Sport, Recreation
Creative and Intellectual Life
New Zealand in Brief
There are also features on the major geographic regions throughout the country.
You can read the encyclopedia in English or Māori.