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The view to the southeast from Point Sublime after sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Walkway, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Cliff Geyser erupts from geyserite bank on edge of Firehole River through Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

West Rim, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America

Lake Quinault, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Father and son hike to Anderson Pass, Enchanted Valley, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Grass and maple trees in temperate rain forest, Queets River, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Winter landscape, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Valley View with El Capitan, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Regenerating trees reflected in a frosty and misty Lewis River at dawn, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Daisy Geyser, one of the most predictable, erupts at an angle, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Chromatic Pool and surrounds on a clear day, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Tourists on boardwalk in silhouette, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Backpacker crossing bridge, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Backpackers in steamy light, Queets Vall, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Moss-covered tree trunks in the rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Lower Falls, Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison), Hayden Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Morning Glory Pool and surrounds, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Cold tourists on seat surrounded by steam, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Dead trees and steam with mountain backdrop and blue skies, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Fallen lodgepole pines, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Fishing Cone Geyser with freezing mists, Yellowstone Lake at West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Visitors, steam and vivid colours, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Late afternoon light on Horsetail Falls, a phenomenon which occurs only one or two days a year in late February due to the angle of the sun and snow melt on the cliffs, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Late afternoon light on Horsetail Falls, a phenomenon which occurs only one or two days a year in late February due to the angle of the sun and snow melt on the cliffs, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Fresh snow fall on El Capitan in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Elk herd, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Returning on horseback, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Tourist admiring the view from the South Rim, near Yavapai Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America

Mount Olympus and Blue Glacier, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Young woman enjoying the coast, Second Beach, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Tourists with guide, The Grand Ball Court (Gran Juego de Pelota), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Temple of the Bearded Man (Templo del Barbado), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

El Caracol (the Snail), Observatory, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Serpent heads, El Castillo (Pyramid of Kulkulcan), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

The Red House, Casa Colorado, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Platform of the Eagles and Jaguars, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Stairway with serpent heads, Platform of Venus, Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

El Castillo (Pyramid of Kulkulcan), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Anasazi Ruins, Square Tower House, dating from between 600 AD and 1300 AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Anasazi Ruins, Cliff Palace, dating from between 600 AD and 1300 AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Chac Rain God mask, The Church (La Iglesia), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

El Castillo (Pyramid of Kulkulcan), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Tenaya Lake at sunset from Olmsted Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

A lone photographer stands perched on a rock silhouetted against the dawn orange sky at Yaki Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sun rays extend from a cloud perched on the horizon putting Vishnu temple into silhouette, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Chaco Culture National Historic Park, World Heritage Site, Fajada Butte, UNESCO World Heritage Site, New Mexico, United States of America, North America

Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America

Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America

West Ruin, Aztec Ruins National Monument, dating from between 850 AD and 1100 AD, UNESCO World Heritage Site, New Mexico, United States of America, North America

Anasazi Ruins, Cliff Palace, dating from between 600 AD and 1300 AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Steamboat Mountain at sunset from Locust Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Petroglyph near Chetro Ketl, Chaco Culture National Historical Park, UNESCO World Heritage Site, New Mexico, United States of America, North America

Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Cape Royal Viewpoint at sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Wotans Throne, Cape Royal Viewpoint at sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Colorado River below, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sunrise at Mather Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon viewed from South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Fog mingling with evergreen trees with some cottonwoods, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

San Geronimo Chapel, Taos Pueblo, UNESCO World Heritage Site, Pueblo dates to 1000 AD, New Mexico, United States of America, North America

Bachelor and Three Graces Sequoia tress in Mariposa Grove, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) cow and calf, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Pool runoff of orange bacteria and algae (Therophiles), Grand Prismatic Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) cow and calf in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) bull in a spring snowstorm, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Unicorn Peak mountain above mist shrouded pine forest, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Bison (Bison bison) cow and calf in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) bull in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

View towards Half Dome at sunset, from Olmsted Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Canoe at Pyramid Lake with Pyramid Mountain in the background, Jasper National Park, UNESCO World Heritage Site, Alberta, The Rocky Mountains, Canada, North America

Tourists viewing Half Dome and Yosemite Valley from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Giant Sequoia (Sequoiadendron giganteum) trees in Mariposa Grove, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Chac Rain God masks, Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Frieze, Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Stucco relief, Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Pyramid of the Magician, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Corbelled arch, Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Nuns Quadrangle, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Palace of the Governor on the left and Pyramid of the Magician beyond, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Pyramid of the Magician on right, and Nun's Quadrangle to the left, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Palace of the Governor on left, with Pyramid of the Magician in the background, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

House of Turtles, Uxmal Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America

Palace of the Governor, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America