Palau

On arrival in Palau, all visitors are asked to sign the Pledge, assuring that they will “act in an ecologically and culturally responsible way on the island, for the sake of Palau’s children and future generations.” And there’s much to protect. The United Nations recognizes the unique limestone formations of Palau’s Rock Islands as the most ecologically and culturally significant destination in the Pacific.

Divers come to drift kaleidoscopic reefs swarming with tropical fish and patrolling sharks; snorkelers immerse in clouds of non-stinging jellyfish in a hidden freshwater lake; paddlers tour a labyrinth of circuitous channels to reach the healing waters of Milky Way Cove; and history buffs trek hidden paths that reveal memories of war and millennial-old archaeological sites. Crowds aren’t a thing, as Palau’s entire population would only half-fill Yankee Stadium. But uncrowded doesn’t mean uncomfortable, as the islands boast an excellent collection of upscale resorts and authentic beach lodges.