Further down this page there's a map of New Zealand that you can zoom into for a close up of regions and roads.
I have provided brief instructions but if you are already familiar with using online maps you can quickly scroll down the page and bypass the instructions.
Hover over the map with your mouse and when you see a hand icon appear hold the mouse button down and simply move it to wherever you want to.
To zoom in or out use the + and/or - keys.
Double click your mouse button exactly on the spot you want to zoom into, it will zoom and centre that location. To zoom in further just keep double clicking on the location you want more detail of, such as a town.