The New Zealand Parliament Buildings has two main buildings. The oldest is an Edwardian neoclassical building which opened in 1865 after Parliament moved from Auckland to Wellington.
The second main building is the Executive Wing where the current Governing Government are housed. This building, known as the Beehive because of how it looks, was built in stages between 1969 - 1979.
It is free to walk around the Parliament grounds and there are guided paid tours of parts of the building, which includes going underneath and viewing the cushioning pads that protect it during earthquakes.
See Google Maps here https://goo.gl/maps/3EkJx6SYrh42, photos here https://photos.app.goo.gl/js6uQvvkNeMLoCda9