Without the Colorado River’s tenacious work, Arizona never could have become the Grand Canyon State. The river carved this impressive gorge — 10 miles wide at its narrowest point, North Rim to South Rim as the crow flies — over the course of millions of years. The Grand Canyon is one of 162 natural sites recognized on the United Nations’ World Heritage List for having “outstanding universal value.” The South Rim is the most accessible entrance to Grand Canyon National Park and, unlike the North Rim, is open year-round. Many guided tours — by mule, horse, air, motorcoach and boat — require advance reservations, but several ranger programs are offered daily.
Grand Canyon Village, AZ