Milford Sound, South Island, New Zealand:  This is a must-see in every New Zealand guide, so we found ourselves steering our camper van in its direction.  This natural wonder was formed tens of millions of years ago by glacial cutting, and the resulting fiord is of astounding magnitude. Unfortunately, this area gets about 200 days of rain a year and we were (un)lucky enough to camp up there on one of the coldest, rainiest and windiest days. This weather, while tough to sightsee in, made for the most impressive waterfalls. The Sound normally has 2 waterfalls; on this crazy weather day, we were able to see thousands.