Grand Canyon
The Grand Canyon was designated as a National Park in 1919. The Colorado River carves out this spectacular geological gorge; from top to bottom, it is about one mile high! You can hike to the bottom in about one to two days. At the bottom is a town that even has a Post Office! There are many things to do at the Grand Canyon; you can even ride a mule to the bottom, or do white water rafting along the Colorado River.