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River and colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America
Wood Duck (Aix sponsa) pair, Rio Grande Zoo, Albuquerque Biological Park, Albuquerque, New Mexico, United States of America, North America
Fannette Island in Emerald Bay State Park, Lake Tahoe, California, United States of America, North America
Great Horned Owl (Bubo virginianus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Dead Horse Point Overlook at sunset, Dead Horse Point State Park, near Moab, Utah, United States of America, North America
Queensboro Bridge, Manhattan skyline and the Empire State Building viewed from Queens at dawn, New York, United States of America, North America
Christmas tree in front of the Rockefeller Centre building on Fifth Avenue, Manhattan, New York City, New York, United States of America, North America
Statue of former first lady Eleanor Roosevelt at the Franklin D. Roosevelt Memorial in Washington, D.C., United States of America, North America
River otter (Lutra canadensis) mother and two pups, Yellowstone National Park, Wyoming, United States of America, North America
Black Bear (Ursus americanus) sow climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Half Dome mountain above the River Merced in springtime, Yosemite Valley, UNESCO World Heritage Site, California, United States of America, North America
Mountain Goat (Oreamnos americanus), Mount Evans, Colorado, United States of America, North America
View of Golden Gate Bridge, San Francisco, California, United States of America, North America
The Teton Range at dawn after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America
Bighorn sheep (Ovis canadensis) in the winter, Yellowstone National Park, Wyoming, United States of America, North America
Orange clouds at sunrise above sandstone formations, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Sandstone swirl under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Sandstone formations under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Hiker on the sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Antelope Canyon, Page, Arizona, United States of America, North America
Antelope Canyon, Page, Arizona, United States of America, North America
Silver Four Ladies of Hollywood Gazebo Statue, Hollywood Walk of Fame, Hollywood Boulevard, Los Angeles, California, United States of America, North America
Vineyard of Winery, The Hamptons, Long Island, New York, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow and three cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
Red leaves on a big tooth maple (Acer grandidentatum) near a Ponderosa pine (Pinus ponderosa) trunk in the fall, Zion National Park, Utah, United States of America, North America
Salmon-coloured sandstone wall with evergreens, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Small bush in the wash near a sandstone butte, Capitol Reef National Park, Utah, United States of America, North America
Golden Gate Bridge, San Francisco, California, United States of America, North America
Sun shining through grass on Chichagof Island, Southeast Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae) flukes-up dive, Snow Pass, Southeast Alaska, United States of America, North America
Johns Hopkins Glacier calving, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
The Norwegian fishing town of Petersburg, Southeast Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae) flukes-up dive, Snow Pass, Southeast Alaska, United States of America, North America
Financial district skyline, San Francisco, California, United States of America, North America
Monument to Unangan People, Unalaska Island, Aleutian Islands, Alaska, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, ladder leading to ancient cave dwelling, New Mexico, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, 14th and 15th century dwellings, New Mexico, United States of America, North America
Window Rock Navajo Tribal Park & Veteran's Memorial, Window Rock, Arizona, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, tent like rock formations, from volcanic eruptions 6 to 7 million years ago, New Mexico, United States of America, North America
Downtown and TransAmerica Building from Telegraph Hill Historic District, San Francisco, California, United States of America, North America
Three young cliff chipmunk (Eutamias dorsalis), Chiricahuas, Coronado National Forest, Arizona, United States of America, North America
Cathedral Beach, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Statue of Colonel William Prescott, Bunker Hill, Charlestown, Boston, Massachusetts, New England, United States of America, North America
Rock formations in The Needles, Canyonlands National Park, Utah, United States of America, North America
Tent illuminated under the night sky, Rocky Mountain National Park, Colorado, United States of America, North America
Summit of Longs Peak, a mountain above 14000 feet, known as a 14er, Rocky Mountain National Park, Colorado, United States of America, North America
Hoonah, shoreline brewpub and dock, Tlingit Community, Icy Strait Point, Chichagof Island, Inside Passage, Southeast Alaska, United States of America, North America
Siltstone eroded formations of Zabriske Point, Furnace Creek, Death Valley National Park, California, United States of America, North America
Lone Ponderosa pine atop a sandstone formation at first light, Zion National Park, Utah, United States of America, North America
Least chipmunk (Neotamias minimus) eating, Custer State Park, South Dakota, United States of America, North America
Black-tailed prairie dog (blacktail prairie dog) (Cynomys ludovicianus) eating, Custer State Park, South Dakota, United States of America, North America
Least chipmunk (Neotamias minimus) eating, Custer State Park, South Dakota, United States of America, North America
Fall scene, Central Park, New York City, United States of America, North America
Central Park, New York City, United States of America, North America
Spider Rock from Spider Rock Overlook, Canyon de Chelly National Monument, Arizona, United States of America, North America
Tall buildings on North Michigan Avenue reflecting in the Cloud Gate steel sculpture by Anish Kapoor, Millennium Park, Chicago, Illinois, United States of America, North America
Close up of Chicago Theatre marquee, Chicgo, Illinois, United States of America, North America
Atchison, Kansas, United States of America, North America
Sunset at Locust Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Chicago cityscape from Lake Michigan, the Adler Planetarium Sundial in the foreground with Willis Tower, formerly the Sears Tower beyond, Chicago, Illinois, United States of America, North America
Franconia Notch State Park, New Hampshire, New England, United States of America, North America
West Quoddy Lighthouse, Lubec, Maine, New England, United States of America, North America
Portland Head Lighthouse, Portland, Maine,New England, United States of America, North America
Elevated view of the hotels and casinos along The Strip at dusk, Las Vegas, Nevada, United States of America, North America
Larimer Square, Denver, Colorado, United States of America, North America
Cannon outside Hamilton County Courthouse, Chattanooga, Tennessee, United States of America, North America
Panoramic photo of Court of the Patriarchs, Abraham Peak, Isaac Peak, Mount Moroni and Jacob Peak, Zion National Park, Utah, United States of America, North America
The Chicago Theater sign has become an iconic symbol of the city, Chicago, Illinois, United States of America, North America
Rippled gypsum, sand dunes in the White Sands National Monument, New Mexico, United States of America, North America
West Mitten Butte and East Mitten Butte, The Mittens at sunrise, Monument Valley Navajo Tribal Park, Arizona, United States of America, North America
West Mitten Butte, East Mitten Butte and Merrick Butte, The Mittens, Monument Valley Navajo Tribal Park, Arizona, United States of America, North America
The Alamo, Mission San Antonio de Valero, San Antonio, Texas, United States of America, North America
Mission San Francisco de la Espada, San Antonio, Texas, United States of America, North America
Cattle in Fort Worth Stockyards, Texas, United States of America, North America
Sharp-tailed grouse (Tympanuchus phasianellus, previously Tetrao phasianellus), Custer State Park, South Dakota, United States of America, North America
Fireweed (Chamerion angustifolium), San Juan National Forest, Colorado, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America
Roseroot (king's crown) (Sedum rosea), Gunnison National Forest, Colorado, United States of America, North America
View of Thomas Jefferson Memorial, Washington D.C., United States of America, North America
Puebloans mud and stone granaries, Aztex Butte, Canyonlands National Park, Utah, United States of America, North America
Petroglyphs at Sun's Eye, Monument Valley Navajo Tribal Park, Monument Valley, Utah, United States of America, North America
Tourists at Mather Point, early morning, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Orange hawkweed (fox-and-cubs) (tawny hawkweed) (Devil's paintbrush) (Grim-the-Collier) (Pilosella aurantiaca), Idaho Panhandle National Forests, Idaho, United States of America, North America
Glacier lily (dogtooth violet) (Erythronium grandiflorum), Gallatin National Forest, Montana, United States of America, North America
Fern Falls, Coeur d'Alene National Forest, Idaho Panhandle National Forests, Idaho, United States of America, North America
Sunset over an Alpine tarn at Stoney Pass, San Juan National Forest, Colorado, United States of America, North America
Bison (Bison bison) bull, Yellowstone National Park, Wyoming, United States of America, North America
Fall colours line the banks of North Lake near Bishop, Eastern Sierras, California, United States of America, North America
Rock formations, Chesler Park, The Needles district, Canyonlands National Park, Utah, United States of America, North America
Yosemite Falls through the conifer woodlands of Yosemite Valley, UNESCO World Heritage Site, California, United States of America, North America
Last light on Half Dome, photographed from Olmsted Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Golden Nugget Casino and Fremont Street Experience, Las Vegas, Nevada, United States of America, North America
Silhouette of mother taking pictures of children at sunset, Vashon Island, Washington State, United States of America, North America
Exterior of the new Chihuly Glass Museum located below the Space Needle, Seattle, Washington State, United States of America, North America
Two bighorn sheep (Ovis canadensis) rams during the rut, Clear Creek County, Colorado, United States of America, North America
The Mini Wave formation, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America
Excelsior Geyser Crater, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Lazuli bunting (Passerina amoena), male in winter plumage, Chiricahuas, Coronado National Forest, Arizona, United States of America, North America
Black bear (Ursus americanus) in the snow, Yellowstone National Park, Wyoming, United States of America, North America