Grand Canyon National Park

The Grand Canyon plunges 1,857 meters deep, exposing 2 billion years of geological history in its layered walls. Carved by the Colorado River over 5 million years, the canyon stretches 446 km and spans 4,926 sq km. The park supports 1,500 plant species, 355 bird species, and 89 mammal species, drawing over 6 million visitors annually. Compared to #3 Serengeti’s relatively flat savannah, the Grand Canyon’s vertical drop is a dramatic contrast in scale.