1. Red Beach, Santorini , Greece
A crescent-shaped island in the middle of the Aegean Sea, Santorini was once a massive volcano—archaeologists say it blew its top way back in the Bronze Age. It left behind a fascinating place where whitewashed buildings cling to the edge of towering sea cliffs, and beaches come in many colours—including black, brown, white and even red. At Red Beach, iron-rich sands—and the cliffs that hem them in— have taken a curious and beautiful rust-coloured hue, which forms a stark contrast when they intersect with the beach’s deep blue waters.