Grand Canyon National Park overwhelms the senses with its sheer size. It's 277 river miles long, up to 18 miles wide and a mile deep. It also has some of the best sunsets in the world. Photo from the South Rim courtesy of <PERSON>. <PERSON>, <PERSON>, Great Smoky Mountains, Death Valley, North Cascades, Grand Canyon Photography, Landscape Photography, The Places Youll Go, Places To Go