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

Hanging Rock at the Blue Mountains, New South Wales (© Phillip Hayson/Photolibrary/Getty Images)(Bing Australia)

Porcupines in Glacier National Park, Montana (© D. Robert & Lorri Franz/Aurora Photos)(Bing Australia)

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

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

African lion cub playing with adult male, Masai Mara National Reserve, Kenya (© Suzi Eszterhas/Minden Pictures)(Bing Australia)

Alligator Reef Light in the Florida Keys (© Stephen Frink/Aurora Photos)(Bing Australia)

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

Chipmunk eating red berries (© Takao Onozato/Aflo/Getty Images)(Bing Australia)

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

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

Pasture in Mânăstirea Humorului, Bukovina, Romania (© Photononstop/SuperStock)(Bing Australia)

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

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

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

Rainforest trees burnt by lightning in Daintree National Park, Far North Queensland, Australia (© Peter Adams/plainpicture)(Bing Australia)

Macaws, Tambopata National Reserve, Peru (© Frans Lanting/Getty Images)(Bing Australia)

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

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

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

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

Porcelain crab (Neopetrolisthes maculatus) at the Great Barrier Reef, Australia (© Rodger Klein/WaterFrame/Getty Images)(Bing Australia)

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

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

Lavender fields, Banon, France (© Roland Gerth/Corbis)(Bing Australia)

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

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

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

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