10. Makgadikgadi Pans, Botswana
Saltier than a salt shaker. Shutterstock It’s said you can hear your own blood flow in this vast area of dried-up salt pans in the Kalahari Desert, a forbidding landscape formed by a huge lake that dried up millennia ago.
But it can transform in an instant during winter, if rains have been good enough to make lush grass sprout, bringing a stampede of wildlife to break the silence, including zebra, wildebeest, and flamingos.