Stretching 7.5 miles down the Southern Alps in the South Island of New Zealand is the Franz Josef Glacier. The physically fit can hike up it. It is more fun to take a helicopter ride. You will fly up the mountain and land on the snow-capped peak. After snapping photos and having a snowball fight, your pilot will fly down the glacier like an aerial toboggan. The crystals of white, brown and blue ice are gorgeous. Unfortunately, Franz Josef and the neighboring Fox Glacier are rapidly retreating because of global warming.