View of the Empire State Building from the top of the Rockefeller Center, New York City, NY -- SIME/eStock Photo © (Bing United States)

Long-tailed Mayflies (Palingenia longicauda) hatching in the Tisza River -- Solvin Zankl/Visuals Unlimited,Inc. © (Bing United States)

Container ship being loaded at the Port of Los Angeles, California -- Hal Bergman/Getty Images © (Bing United States)

A small barn sits on a hilltop in the Yaiza area of southern Lanzarote, Canary Islands, Spain -- SIME/eStock Photo © (Bing United States)

Cathedral of San Gervasio, Valladolid, Mexico -- Degree/eStock Photo © (Bing United States)

Opal coral in Australia’s Great Barrier Reef -- David Doubilet/National Geographic © (Bing United States)

Hyacinth and tulip garden, Keukenhof Gardens, Lisse, Netherlands -- Adam Jones / Getty Images © (Bing United States)

Grizzly bear sow with four cubs near Moraine Creek, Katmai National Park, Alaska -- AlaskaStock/Corbis © (Bing United States)

Lanterns in the Grand Bazaar, Istanbul, Turkey -- Jeremy Horner/Corbis © (Bing United States)

Underground river and cenote on the Yucatán Peninsula, Mexico-- Jack Paulus/National Geographic Your Shot © (Bing United States)

Angel Falls, Bolivar, Venezuela -- Jay Dickman/CORBIS © (Bing United States)

Two sea slugs near Lankayan Island , Malaysia -- Reinhard Dirscherl/photolibrary © (Bing United States)

Vervet monkey in Kenya -- Panoramic Images/Getty Images © (Bing United States)

Migrating snow geese in flight near Bosque del Apache National Wildlife Refuge, New Mexico -- Winfried Wisniewski/Corbis © (Bing United States)

Amphitheater, Bryce Canyon National Park, Utah -- Imagebroker rf/Photolibrary © (Bing United States)

BASE jumpers, Half Dome, Yosemite -- Lynsey Dyer/National Geographic © (Bing United States)

Underwater view of wave in Hawaii -- Pacific Stock / SuperStock © (Bing United States)

Orsay Museum in Paris, France -- Peet Simard/Corbis © (Bing United States)

Aerial view of agricultural land in Iowa -- Jim Wark/Corbis © (Bing United States)

Champagne pool in Waiotapu Scenic Reserve, Rotorua, New Zealand -- Kordcom Kordcom/Photolibrary © (Bing United States)

Blue Angels in close formation --Science Faction / SuperStock © (Bing United States)

New York Public Library reading room -- Siegfried Layda/Getty Images © (Bing United States)

Palacio de Cristal, located in Buen Retiro Park, Madrid, Spain -- Krzysztof Dydynski/Lonely Planet Images © (Bing United States)

Rugged sea stacks of the Isle of Lewis, Scotland -- Jim Richardson/Corbis © (Bing United States)

Evaporating salt water reservoirs of Teguidda-n-Tessoumt, Niger -- George Steinmetz/Corbis © (Bing United States)

Georg-Brauchle-Rin U-Bahn station in Munich, Germany -- Christian Beirle González/Getty Images © (Bing United States)

Red peppers laid out to dry near Baicheng, Xinjiang, China -- George Steinmetz/Corbis © (Bing United States)

Pangalusian Island beach in El Nido, Philippines -- Bruno Cossa/Corbis © (Bing United States)

Cars racing at Indianapolis Motor Speedway in Indianapolis, Indiana -- Chris Graythen/Getty Images © (Bing United States)

Flags line the entrance of the Massachusetts National Cemetery in Bourne, Cape Cod, Massachusetts -- Michael Neelon/age fotostock © (Bing United States)

A trio of timber wolves greet each other -- Jacqueline Crivello/National Geographic Your Shot © (Bing United States)