Tulip fields in Noordoostpolder, Netherlands (© Siebe Swart/plainpicture)(Bing United Kingdom)

Rocky shoreline in Saguenay-St. Lawrence Marine Park, Quebec, Canada (© Yves Marcoux/plainpicture)(Bing United Kingdom)

Southern white rhinoceros mother and calf (© Theo Allofs/Masterfile)(Bing United Kingdom)

The Koknese Castle ruins in Koknese, Latvia (© Andrejs Zemdega/Getty Images)(Bing United Kingdom)

Pass over the Atlas Mountains above the Dadès Gorges, Morocco (© Art Wolfe/Mint Images)(Bing United Kingdom)

North American porcupine (© Minden Pictures/SuperStock)(Bing United Kingdom)

10 Downing Street, Whitehall, London (© Nathan King/Alamy)(Bing United Kingdom)

Poplar trees in Po Valley, Italy (© Eddy Galeotti/Alamy)(Bing United Kingdom)

Springtime in Europe (© European Space Agency (ESA/VITO))(Bing United Kingdom)

Eurasian Eagle-owl (Bubo bubo) standing amongst Bluebells during rainfall, Suffolk, England (© Paul Sawer/Corbis)(Bing United Kingdom)

Smoo Cave in Durness, Scotland, United Kingdom (© GS/Gallery Stock)(Bing United Kingdom)

Marina Bay skyline in Singapore (© Martin Puddy/Getty Images)(Bing United Kingdom)

Archie, a Columbian mammoth specimen at the University of Nebraska State Museum in Lincoln, Nebraska, USA (© Joel Sartore/Getty Images)(Bing United Kingdom)

Black-tailed prairie dogs in Wind Cave National Park, South Dakota, USA (© James Hager/age fotostock)(Bing United Kingdom)

Snow goose migration at the Saint-François River, Quebec, Canada (© David Doubilet/Getty Images)(Bing United Kingdom)

Green Bridge of Wales in Pembrokeshire Coast National Park, Wales (© Billy Stock/Corbis)(Bing United Kingdom)

Mount Saint Helens, Washington, USA (© Diane Cook and Len Jenshel/Getty Images)(Bing United Kingdom)

Flower hat jelly (© Frans Lanting/plainpicture)(Bing United Kingdom)

The Colorado River and Marble Canyon, Grand Canyon National Park, Arizona, USA (© Gavin Heffernan/Shutterstock)(Bing United Kingdom)

Crater Lake, Oregon, USA (© Roshin Lal Ramesan)(Bing United Kingdom)

View to parliament building, town hall tower and statue of goddess Pallas Athene by twilight, Vienna, Austria (© Westend61/Getty Images)(Bing United Kingdom)

Sand dune, Sossusvlei, Namibia (© Erik Joosten/Minden Pictures)(Bing United Kingdom)

Boscastle harbour on the Cornish coast of England (© BlueGreen Pictures/SuperStock)(Bing United Kingdom)

Red-eared slider turtle (© Ammit Jack/Alamy)(Bing United Kingdom)

A fog-shrouded Golden Gate Bridge in San Francisco, USA (© Della Huff/Alamy)(Bing United Kingdom)

Sơn Đoòng Cave in Phong Nha-Kẻ Bàng National Park, Vietnam (© Getty Images)(Bing United Kingdom)

Herd of impalas in Masai Mara National Reserve, Kenya (© Jonathan & Angela Scott/Getty Images)(Bing United Kingdom)

A living bridge in the East Khasi Hills district of Meghalaya, India (© Timothy Allen/Getty Images)(Bing United Kingdom)