North view of Grand Canyon South Rim Arizona from the top floor of the historic Watchtower, taken through glass window, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Scenic view of hoodoos and rock formations, Sunrise Point, Bryce Canyon National Park, Utah, United States of America, North America

Downward view from the third floor in the historic Desert View Watchtower at Grand Canyon South Rim, artwork created by Fred Kobotie in 1933, now owned by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America

Stairs up to the third floor in the historic Desert View Watchtower at Grand Canyon South Rim, artwork created by Fred Kobotie in 1933, now owned by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America

The top floor of the historic Watchtower at Grand Canyon South Rim, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Downward view from the second floor in historic Desert View Watchtower at Grand Canyon South Rim, artwork created by Fred Kobotie in 1933, now owned by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America

Southwest view of Grand Canyon South Rim Arizona from the top floor of the historic Watchtower, taken through glass window, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Northwest view of Grand Canyon South Rim Arizona from the top floor of the historic Watchtower, taken through glass window, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

The top floor of the historic Watchtower at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Stairs going down from the fourth floor in the historic Desert View Watchtower at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Stairs up to the seconnd floor in the historic Desert View Watchtower at Grand Canyon South Rim, artwork created by Fred Kobotie in 1933, now owned by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America

Village seen from floor of the Cesse River canyon, Minerve, Herault, Languedoc-Roussillon, France, Europe

Female highliners simultaneously sitting on a highline above the Yosemite Valley floor at Taft Point, Yosemite National Park, California, United States

Female highliners sitting on the highline and anchor above the Yosemite Valley floor at Taft Point, Yosemite National Park, California, United States

Canyonlands National Park, the view of a zigzag path from the canyon floor up the steep hillside