In addition to white-sand beaches and tropical jungle, the island of Phu Quoc—off the coast of Cambodia—is home to the Coi Nguon Museum (Bảo Tàng Cội Nguồn), a natural history museum that exhibits more than 5,000 artifacts. If you find yourself in one of Phu Quoc’s unpredictable downpours, the natural history museum provides a great place to explore until the skies have cleared.