Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

travel destination photography vertical colour image outdoors day building exterior unesco unesco world heritage site architecture non urban scene landscape physical geography scenics north america united states of america sky walk grand canyon colorado river arizona famous place international landmark natural landmark cloudy sky built structure incidental people observation platform river dramatic landscape extreme terrain sandstone rock rock formation geology desert american culture places of interest usa us united states american north american colour color image color outdoor outside tourist destination travel architectural background people people in the background topography scenery scenic scene scenes picturesque unesco world heritage sites world heritage site world heritage sites typically american traditional culture tradition traditional traditionally american