11. Colorado River
Where: Arizona
Why We Love It: If you want to see the most beautiful river in America, then you need to head over to the Colorado River in Arizona. This river starts in the Rocky Mountains and goes all the way to Mexico. Of course, many people feel that Horseshoe Bend gives you the best view.
However, you can go through seven different states and view other parts of the river because it spans about 1,450 miles long. Many people also feel that this river has many beautiful secret spots, so make sure that you take your time.