02. Grand Canyon
Located in northern Arizona, The Grand Canyon is one of the great tourist attractions in the United States. Carved by the Colorado River, the canyon attains a depth of over 1.6 km (1 mile) and 446 km (277 miles) long. The Grand Canyon is not the deepest or the longest canyon in the world but the overwhelming size and its intricate and colorful landscape offers visitor spectacular vistas that are unmatched throughout the world. It is considered one of the Seven Natural Wonders of the World.