If the only sound you want to hear is the rhythmic lap of gentle waves, Tikehau is the place for you. Part of French Polynesia’s Tuamotu Islands, this tiny (population 400) coral atoll is the ultimate antidote for modern-day stress. You'll find just one village, two small resorts, talcum-soft beaches, and a lagoon so filled with sea life, it was heralded by none other than Jacques Cousteau.