Galápagos National Park, Ecuador

Galápagos National Park is the world’s most important natural laboratory, where 97% of reptile species and 50% of bird species are endemic—found nowhere else. Here, giant tortoises weighing up to 250 kilograms lumber past marine iguanas, the only lizards that forage in the ocean. Darwin’s finches, comprising 13 distinct species, demonstrate adaptive radiation in real time. Unlike Jiuzhaigou Valley’s static beauty, Galápagos offers living evolution, with each island hosting distinct subspecies. Its isolation over 4 million years has created a biodiversity density that outperforms any comparably sized ecosystem on Earth, making it the ultimate destination for understanding life’s origins.