The Italian island of Capri is home to a stunning natural wonder called the ‘Blue Lagoon’. Due to its unique positioning, this subterranean water pool shines an unbelievably vivid azure blue. It’s particularly resplendent on late summer evenings when the setting sun cuts through the rising tide and turns the entire lagoon the color of a sapphire jewel. Intrepid travelers should come outside of boat visiting hours, as they will be able to swim beneath the rock face and enjoy the distinctive location free from the tourist boats.