At the very Northwestern tip of the South Island, you'll find Golden Bay. The drive there from Riwaka - near Nelson, where we're staying - is over a steep and windy mountain pass. On the way there, you'll find Te Waikoropupu Springs Scenic Reserve (also known as Pupu Springs ... hardly a challenging name for childish puns, we excelled at these on the drive over).
This is NZ's largest freshwater spring (look up how many brands of mineral water come from NZ and you'll understand). The water is unbelievably clear. Photos don't do it justice since the reflecting light takes away from the clarity. In some areas it really looks like a pane of glass floating above a riverbed. Stunning, and worth the detour.
After a bite to eat at the nearby and very famous 'Mussel Inn' (get the bacon burger - trust me), we arrived in Golden Bay. I took out the drone for a short flight around the hills and the shores of the bay, to many puzzled looks from the local fishermen.
After catching the views on the Golden Bay side, we took another detour on a gravel road for about 10 miles, to a beach on the outer Western part of the Golden Bay peninsula called Wharariki Beach. Due to the difficulty of access, this place feels incredibly remote once you're there - and it's not overcrowded like many other 'sunset beaches' are. Before you get to the beach itself, you have to cross a sheep farm going up a hill and back down the other side. The views as you crest the climb and approach the beach are unbelievable. Put this on your bucket list, it's an absolute must-see.
We walked the length of the beach stopping every few feet to take yet more photos. The tide was coming in at a furious pace, but offered some nice swell for our captures. After walking the length of the beach and back again, we made our way back to the car and home.