The rainforest and the beach have their fair share of adventure, but if you're looking for a holiday that pushes you somewhere even more out of the box, perhaps a plane ticket to the Atacama Desert in Chile will sate you. It's considered one of the driest places in the entire world (pack your lip balm!), and almost looks like it were a mystical new planet with its erupting geysers, salt lagoons, multi-coloured strata, and jagged cliffs. In fact, it's often compared to Mars.