Located majorly in the state of Arizona, Grand Canyon National Park is home to one of the largest canyons in the world.  Stretching 277-miles in length, spanning up to 18 miles wide and a mile deep, the Grand Canyon is an awe-inspiring sight of colorful layered stone carved out by the mighty Colorado River at its base. Numerous vantage points offer outstanding views overlooking the park, while hiking trails, horseback riding, and river rafting provide unique opportunities to see the canyons up close.