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View of National Gallery of Art, East Building on the National Mall in spring, Washington D.C., United States of America, North America
Farmstead in the old pioneer community at Cades Cove, Great Smoky Mountains National Park, UNESCO World Heritage Site, Appalachians, Tennessee, United States of America (U.S.A.), North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
View from the Alum Cave Bluffs trail in Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America (U.S.A.), North America
Plumes of steam where the lava reaches the sea, Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, Pacific, North America
Governors Island, Queen Mary 2, Park National Historic Landmark District, New York City, New York Harbor, United States of America, North America
Cliff Palace, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Yellow flowering plants and loop road seen from Inferno cone, Craters of the Moon National Monument, Idaho, United States of America (U.S.A.), North America
View of city skyscrapers from Millenium Park, Downtown Chicago, Illinois, United States of America, North America
Second Beach, Olympic National Park, UNESCO World Heritage Site, Washington state, United States of America, North America
St. Mary Lake and Wild Goose Island, Glacier National Park, Rocky Mountains, Montana, United States of America (USA), North America
Bayou in swampland at Jean Lafitte National Historic Park and Preserve, south of New Orleans, Louisiana, United States of America (U.S.A.), North America
Looking behind the 10th green at Augusta National Golf Club during the US Masters, Augusta, Georgia, United States of America, North America
The National Museum of African American History and Culture in spring, Washington D.C., United States of America, North America
Kivas, Pueblo Bonito dated at 1000-1100 AD, Anasazi site, Chaco Canyon National Monument, New Mexico, United States of America (U.S.A.), North America
Grand Canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
East Building, National Gallery of Art, Washington D.C., United States of America (U.S.A.), North America
Redoubt Mountain Lodge on Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America
Devil's Elbow State Park, Oregon, United States of America, North America
Montana De Cro State Park, California, United States of America, North America
Tropical beach, Fort Jefferson, Dry Tortugas National Park, Florida, United States of America, North America
Hikers on arch rock formation in Bryce Canyon Amphitheater, Bryce Canyon National Park, Utah, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
View east from Logan Pass, Glacier National Park, Montana, United States of America (U.S.A.), North America
Thousands of trees blown down by the 1980 eruption still floating on Spirit Lake north of the mountain, Mount St. Helens National Volcanic Monument, Washington State, United States of America (U.S.A.), North America
Gullies eroded into the Pierre shales below Loop Road, Sage Creek wilderness, Badlands National Park, South Dakota, United States of America, North America
Eruption of Castle Geyser with thermophilic bacterica mats in foreground, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fremont's peppergrass (Lepidium fremontii) behind a weathered juniper trunk, Arches National Park, Utah, United States of America, North America
Second Beach, Olympic National Park, UNESCO World Heritage Site, Washington state, United States of America, North America
Lake of the Clouds, Carlsbad Caverns National Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Lower Falls of Yellowstone River, 94m high at head of canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Castle and Sawmill Geysers in eruption in Old Faithful Geyser Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Great Blue Heron, Everglades National Park, UNESCO World Heritage Site, Florida, United States of America, North America
Lindblad National Geographic guests enjoy a Zodiac tour at Dawes Glacier, Southeast Alaska, United States of America, North America
Lindblad National Geographic guests enjoy a Zodiac tour at Dawes Glacier, Southeast Alaska, United States of America, North America
Hoodoos, Bryce amphitheater, Bryce Canyon National Park, Utah, United States of America (U.S.A.), North America
Big Bend National Park, Texas, United States of America, North America
Blisters measuring about 10 cm across in boiling mud pool, Mud volcano, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Saguaro cactus (Cereus giganteus), Saguaro National Park (West), Tucson, Arizona, United States of America, North America
Geysers in Yellowstone National Park, UNESCO World Heritage Site, Montana, United States of America, North America
Stedman-Thomas National Historic District, beautiful summer evening, Ketchikan, Southern Panhandle, Southeast Alaska, United States of America, North America
Galena summit view with sign, Sawtooth National Recreation Area, Idaho, United States of America (U.S.A.), North America
Badlands from Zabriskie Point, looking west, Death Valley National Monument, California, United States of America (U.S.A.), North America
Swamps, Everglades National Park, UNESCO World Heritage Site, Florida, United States of America, North America
Rio Grande River, Santa Elena Canyon, Big Bend National Park, Texas, United States of America, North America
Small plane landed on glacier in Denali National Park, Alaska, United States of America, North America
Geothermal steam from geyser vent between eruptions, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Moulton Ranch, Grand Teton National Park, Wyoming, United States of America, North America
Big Bend National Park, Texas, United States of America, North America
Going to the Sun Road, Glacier National Park, Montana, United States of America, North America
Sleeping Bear Dunes National Lakeshore, Michigan, United States of America, North America
Devil's Tower National Monument, Wyoming, United States of America, North America
Echinus Geyser, erupts every hour in Norris Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Emerald Pool waterfall, Zion National Park, Utah, United States of America, North America
Turret Arch through North Window at sunrise, Arches National Park, Moab, Utah, United States of America, North America
The National Museum of American History in spring, Washington D.C., United States of America, North America
Bandelier National Monument, New Mexico, United States of America, North America
Terraces, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (USA), North America
View from the Rim, Grand Canyon of the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Winter eruption, Old Faithful geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hot water in pools on calcite terraces deposited by Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Lindblad National Geographic guests enjoying sunset at Chichagof Island, southeast Alaska, United States of America, North America
Anhinga trail, Everglades National Park, UNESCO World Heritage Site, Florida, United States of America (U.S.A.), North America
Travertine calcite deposits, Minerva Terrace, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Bison and calf, Yellowstone National Park, Wyoming, United States of America, North America
Snowmobiling in the western area of Yellowstone National Park, UNESCO World Heritage Site, Montana, United States of America, North America
Skyline Drive, Shenandoah National Park, Virginia, United States of America, North America
Yellowstone Canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
American Wigeon (American Widgeon) (Baldpate) (Anas americana) hen, Rio Grande Zoo, Albuquerque Biological Park, Albuquerque, New Mexico, United States of America, North America
The Stars & Stripes in front of the Heritage Centre, White Mountain National Park, New Hampshire, New England, United States of America, North America
Wild flowers, Jackson Lake, Grand Teton National Park, Wyoming, United States of America (USA), North America
General Sherman tree, Sequoia National Park, California, United States of America, North America
Morning Glory spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Alligator, Everglades National Park, Florida, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
English Camp, San Juan Island National Historical Park, San Juan Islands, Washington state, United States of America, North America
Angel's Landing and Virgin River, Zion National Park, Utah, United States of America (USA), North America
Yellowstone Canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cannon battery at Historic Fort Sumter National Monument, Charleston, South Carolina, United States of America, North America
Sunrise, Yellowstone Lake, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (USA), North America
Cottonwood trees on the banks of the Virgin River, Zion National Park, Utah, United States of America, North America
Bandelier National Monument, New Mexico, United States of America, North America
Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Late afternoon, Yovimpa Point, Bryce Canyon National Park, Utah, United States of America, North America
Geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
North American black bear crossing road, Yellowstone National Park, Wyoming, United States of America, North America
Minerva Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (USA), North America
Part of the North Unit of Badlands National Park, South Dakota, United States of America, North America
Blue Mesa, Petrified Forest National Park, Arizona, United States of America (U.S.A.), North America
Path between crater cones inside Haleakala volcano crater, Haleakala National Park, island of Maui, Hawaii, United States of America, Pacific
Egret, Everglades National Park, UNESCO World Heritage Site, Florida, United States of America, North America
Many Glaciers, Glacier National Park, Montana, United States of America, North America
Yellowstone Canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Landscape near Zion National Park, Utah, United States of America, North America
The Everglades, Everglades National Park, Florida, United States of America (USA), North America
Steam from hot springs and snow-free hot ground in Midway Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Vernal Falls, 318ft., Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America