World War II monument, Sutjezka National Park, Bosnia and Herzegovina (© Brendan van Son/Tandem Stills & Motion)(Bing Canada)

Hanoi, Vietnam (© David Santiago Garcia/Aurora Photo)(Bing Canada)

Visitors in Death Valley National Park, California (© David Hellard/Rex Features)(Bing Canada)

Tourists visiting Journey Behind the Falls, Horseshoe Falls, Ontario (© Alan Copson/info@awl-images.com/JAI/Corbis)(Bing Canada)

Leopard perched in a tree in the Moremi Game Reserve, Botswana (© Getty Images)(Bing Canada)

Meltwater creates waterfalls on an ice cap, Svalbard Archipelago, Norway (© Ralph Lee Hopkins/Corbis)(Bing Canada)

Valais blacknose sheep in Valais, Switzerland (© NaturePL/SuperStock)(Bing Canada)

Millau Viaduct over the Tarn River Valley near Millau, France (© Patrick Landmann/Science Photo Library)(Bing Canada)

Rio Tinto, Huelva, Spain (© David Santiago Garcia/Aurora Photos)(Bing Canada)

Canoe on Moraine Lake in Banff National Park, Alberta, Canada (© Getty Images)(Bing Canada)

Treeking on frozen Weasel River with Mt Thor at left, Auyuittuq National Park, Baffin Island, Nunavut (© Grant Dixon/Lonely Planet Images/Getty Images)(Bing Canada)

Mesa Arch, Canyonlands National Park, Utah (© Jeff Clay/Tandem Still + Motion)(Bing Canada)

Palais Royal in Paris, Ministry of Culture, France (© Production Perig/Shutterstock)(Bing Canada)

Young guanaco seeking safety under mother, Torres del Paine National Park, Chile (© Gavriel Jecan/Aurora Photos)(Bing Canada)

Mayan pyramids, Tikal, Guatemala (© AirPano)(Bing Canada)

Aerial View of Triangle Island Ecological Reserve, British Columbia, Canada (© Russ Heinl/Corbis)(Bing Canada)

A dredge boat near the Glénan Islands, France (© Andia/Latitude Stock)(Bing Canada)

A pier goes through the ocean in Iracema beach, Fortaleza city, Ceará state, Brazil (© SIME/eStock Photo)(Bing Canada)

Abandoned army trucks on the North Canol Road, Yukon, Canada (© Robert Postma/Corbis)(Bing Canada)

Ferris wheel gondolas, Oktoberfest, Munich, Germany (© Karlheinz Irlmeier/Corbis)(Bing Canada)

Peace Camp at Downhill Beach in Northern Ireland (© Christopher Hill Photographic/Alamy)(Bing Canada)

Orcas in Resurrection Bay near Kenai Fjords National Park, Alaska (© Steven Kazlowski/SuperStock)(Bing Canada)

Flowing glacial creek with Mount Harrison Smith in background, Cirque of Unclimbables, Nahanni National Park, Northwest Territories (© Peter Mather/First Light/Getty Images)(Bing Canada)

Banana slug in Prairie Creek Redwoods State Park, California (© Michael Nichols/Getty Images)(Bing Canada)

Three Gorges, Yangtze river, China (© View Stock/Getty Images)(Bing Canada)

Elephants in the Okavango Delta, Botswana (© Michael Poliza/Getty Images)(Bing Canada)

Tulips at the Floriade flower festival in Canberra, Australia (© Ginevre Marlow/Alamy)(Bing Canada)

Boathouses on Lake Panache, Greater Sudbury, Ontario, Canada (© Don Johnston/Corbis)(Bing Canada)

Hohenzollern Castle near Stuttgart, Germany (© Heinz Wohner/Getty Images)(Bing Canada)

Marina Bay, Singapore (© Andy Lerner/Tandem Stills + Motion)(Bing Canada)