A river in Kakadu National Park, Australia (© Yann Arthus-Bertrand/Corbis)(Bing Canada)

Interior of the Colosseum in Rome, Italy (© Ken Kaminesky/Corbis)(Bing Canada)

Fog Lifting, Hopewell Rocks, Flowerpots, Sandstone, Hopewell, Bay of Fundy, New Brunswick (© All Canada Photos/Alamy)(Bing Canada)

Colorful homes line Nyhavn Canal in Copenhagen, Denmark (© Benjeev Rendhava/Getty Images)(Bing Canada)

Rapa River Valley in Sarek National Park, Norbotten County, Sweden (© Johan Assarsson/Getty Images)(Bing Canada)

Ceiling detail at the entrance to Kyoto Station, Kyoto, Japan (© Ocean/Corbis)(Bing Canada)

Trees in sweaters, Blanton Museum Of Art, University Of Texas, Austin, Texas (© Inga Spence/Alamy)(Bing Canada)

Kelp at low tide, Bay of Fundy, Nova Scotia, Canada (© Michelle Valberg/Corbis)(Bing Canada)

Lobster traps stacked waiting for the lobster fishing season on the Bay of Fundy in Canada.(© Ruth Burke/Alamy)(Bing Canada)

Kona Coast, Big Island, Hawaii (© Bob Glusic/Wilderness Video)(Bing Canada)

Duanwu Festival (Dragon Boat Festival), Liuzhou, Guangxi Zhuang Autonomous Region, China (© Imaginechina/Corbis)(Bing Canada)

Mangrove seen from underwater, Aldabra, Seychelles (© Expeditieteam Aldabra/Foto Natura/Minden Pictures)(Bing Canada)

Sunset over the Garonne River in Toulouse, France (© Richard Fairless/Getty Images)(Bing Canada)

Schooling bigeye trevallies off the coast of Bali, Indonesia (© David Fleetham/Visuals Unlimited, Inc.)(Bing Canada)

Adult male mountain gorilla and juvenile in Volcanoes National Park, Rwanda (© Doug Steakley/Getty Images)(Bing Canada)

Lulworth Cove along Jurassic Coast, England (© SIME/eStock Photo)(Bing Canada)

Silky anteater near Penonomé in Coclé province, Republic of Panama (© Zizza Gordon/Alamy)(Bing Canada)

Clouds above Los Cuernos and Lake Pehoé in Torres del Paine, Chile (© Marcio Cabral/360cities.net)(Bing Canada)

An aurora borealis shines over Laurentian Beach, on the eastern shore of Lake Manitoba, in the wee hours of August 6th, 2010. (© Federico Buchbinder/Flickr/Getty Images)(Bing Canada)

Stained-glass ceiling of the Palau de la Musica Catalana, Barcelona, Spain (© Ocean/Corbis)(Bing Canada)

Bear Lakes Basin on the Sierra High Route, California (© Rachid Dahnoun/Aurora Photos)(Bing Canada)

Ruins in Safed, Israel (© Noam Armonn/Corbis)(Bing Canada)

Thunderstorm near Coffee Bay on the Wild Coast region of South Africa (© Jon Hicks/Corbis)(Bing Canada)

Day octopus (Octopus cyanea) in the water near Lanai, Hawaii (©David Fleetham/Visuals Unlimited, Inc.)(Bing Canada)

Haystack Rock, Cannon Beach, Oregon (© Clipcanvas)(Bing Canada)

Staircase inside the Île Vierge lighthouse, Brittany, France (© Stefano Torrione/SIME/4Corners)(Bing Canada)

Northern gannet at Bonaventure Island and Percé Rock National Park, Quebec, Canada (© Arthur Morris/Corbis)(Bing Canada)

Cliff Palace in Mesa Verde National Park, Colorado (© George H.H. Huey/Alamy)(Bing Canada)

Bridge over a marshland near the Khongoryn Els Sand Dunes in the Gobi Desert, Mongolia (© Franck Guiziou/Hemis/Corbis)(Bing Canada)