Grand Canyon National Park is a natural wonder of the world and one of the most popular national parks in the United States. Located in northern Arizona, the park encompasses over 1,200 square miles of breathtaking scenery. including the Grand Canyon, a vast gorge carved by the Colorado River over millions of years. The Grand Canyon is 277 miles long, up to 18 miles wide, and attains a depth of over a mile. Its layered bands of rock reveal millions of years of geological history, and its ever-changing colors are a sight to behold. The park is home to a variety of wildlife, including mule deer, elk, coyotes, and mountain lions. Take a mule ride down into the canyon or take a scenic helicopter tour.