MADAGASCAR // This outlandishly beautiful national park may be a desert canyon, but get your bathing costume ready to dive right in. Between explorations of vertical walls, chiselled buttes and canyon floors by foot, mountain bike, horse or even via ferrata (cabled climbing routes), it's hard to resist the streams meandering beneath leafy canopies. Come day's end, you'll sit happily exhausted and watch the landscape shift with the golden rays and shadows cast by the last light.