From Canterbury you can go:
North to Marlborough, perhaps catching the Picton ferry to Wellington;
South to Otago and Southland, where the popular tourist destinations are:QueenstownWanakaTe Anau, Fiordland and Milford Sound.
West over the Southern Alps to the West Coast and explore Buller or Westland, moving on to Nelson in the north or go South to the Glaciers then back over the Haast pass to Wanaka, Queenstown and on to Te Anau and Milford Sound, which is where pretty much every tourist to New Zealand eventually goes.
