Small herd of giraffes, Namibia (© Jim Zuckerman/Corbis)(Bing United States)

Library interior, University of Zurich, Switzerland (© Monika Nikolic/plainpicture)(Bing United States)

Decorative watermelon (© Cristina Pedrazzini/Getty Images)(Bing United States)

Fishing boats moored in Newport, Oregon (© Craig Tuttle/Corbis)(Bing United States)

North Avenue Beach on Lake Michigan, Chicago (© Luiz Felipe Castro/Getty Images)(Bing United States)

View from the top of Burj Khalifa, in Dubai, United Arab Emirates (© Alisdair Miller/In cooperation with 500px)(Bing United States)

Western honey bee (© Jeridu/Getty Images)(Bing United States)

Trestle bridge on the Virginia Creeper Trail, Virginia (© Cameron Davidson/Getty Images)(Bing United States)

Abraham Lake on the North Saskatchewan River in Alberta, Canada (© Don Johnston/Corbis)(Bing United States)

Stairs under the Pyramid at the Louvre Museum in Paris, France (© Maremagnum/Getty Images)(Bing United States)

A speedboat tows “tubers” on Abbey Lake in Surrey, England (© Jason Hawkes/Getty Images)(Bing United States)

Horned ghost crab on Bird Island in the Seychelles (© Ronald Wittek/Superstock)(Bing United States)

Love locks displayed on the Great Wall of China near Beijing (© Richard Taylor/4Corners)(Bing United States)

Fog drifts over the Redwood National and State Parks, California (© Corbis Motion)(Bing United States)

Pineapple fields in Maui, Hawaii (© Pacific Stock - Design Pics/SuperStock)(Bing United States)

Crowds at Weymouth Beach in Dorset, England (© Jack Sullivan/Alamy)(Bing United States)

Arctic ground squirrel, Denali National Park and Preserve, Alaska (© Ning Liu)(Bing United States)

Carcassonne and the Pont Vieux bridge over the Aude River in Languedoc-Roussillon, France (© Tuul/Getty Images)(Bing United States)

Profile of an Australian pelican (© Theo Allofs/Corbis)(Bing United States)

Combine harvesting wheat near Jamestown, North Dakota (© Richard Hamilton Smith/Gallery Stock)(Bing United States)

Katale Khor cave in Iran (© Reza Pazhouhesh/360cities.net)(Bing United States)

Ceiling of the Sagrada Família in Barcelona, Spain (© Jose Fuste Raga/eStock Photo)(Bing United States)

Mount Vesuvius, Italy (© Modestino Carbone/Getty Images)(Bing United States)

Angels Landing Trail in Zion National Park, Utah (© Brandon Flint/Tandem stock)(Bing United States)

Rådhuset metro station in Stockholm, Sweden (© Alexander Dragunov/In cooperation with 500px)(Bing United States)

Pacific Park’s Ferris wheel on Santa Monica Pier, California (© Getty Images)(Bing United States)

The March on Washington for Jobs and Freedom, August 28, 1963 (© Bettmann/Corbis)(Bing United States)

Colorful rhyolite peaks in the Landmannalaugar region of Iceland (© Ildiko Baranyi/Getty Images)(Bing United States)

Raw garnet from Madagascar (© Walter Geiersperger/Corbis)(Bing United States)

Mountain goat herd on a hillside near Exit Glacier, Kenai Fjords National Park, Alaska (© Steven Kazlowski/Corbis)(Bing United States)