Rainbow eucalyptus trees along the Hana Highway, Maui (© GlowingEarth/Getty Images Plus)(Bing Australia)

'Field of Light at Sensorio,' by Bruce Munro, Paso Robles, California (© George Rose/Getty Images)(Bing Australia)

Sperm whale mother and albino baby swimming off the coast of Portugal (© Flip Nicklin/Minden Pictures)(Bing Australia)

Burrowing parrots in Las Lajas, Argentina (© Cagan Hakki Sekercioglu/Getty Images)(Bing Australia)

Ceiling of the Tomb of the Unknown Australian Soldier, Australian War Memorial, Canberra (© David Wall/DanitaDelimont.com)(Bing Australia)

Moons of Jupiter - Io, Europa, Ganymede, and Callisto (© Branko Šimunek/Alamy)(Bing Australia)

Tianmen Mountain in Zhangjiajie, China (© Bogdan Dyiakonovych/Shutterstock)(Bing Australia)

Beach in the evening light at Whisky Bay, Wilsons Promontory National Park, Victoria (© Michael Breitung/Huber/eStock Photo)(Bing Australia)

Flags outside the UN's Palace of Nations in Geneva, Switzerland (© Mustafa Yalcin/Anadolu Agency/Getty Images)(Bing Australia)

Small rakan statues line the stone pathway to the Daisho-in Temple, Miyajima, Japan (© Malcolm Fairman/Alamy)(Bing Australia)

Trakai Island Castle Museum in Trakai, Lithuania (© Andrius Aleksandravicius/Alamy)(Bing Australia)

The Dubai Fountain in Burj Lake taken from the Burj Khalifa in Dubai (© Eli Asenova/Getty Images)(Bing Australia)

Male muskoxen near Prudhoe Bay in Alaska (© Oliver Smart/Alamy)(Bing Australia)

Aerial view of Boudhanath stupa in Kathmandu, Nepal (© Maksim Semin/Shutterstock)(Bing Australia)

Sunset in Val Gardena in the Dolomites of South Tyrol, Italy (© Marco Capellari/Getty Images)(Bing Australia)

A Brandt's cormorant hunts for a meal in a school of Pacific mackerel beneath an oil rig off the coast of Los Angeles, California (© Alex Mustard/Minden Pictures)(Bing Australia)

Zebras and wildebeests in the Serengeti National Park in Tanzania (© Raffi Maghdessian/Cavan Images)(Bing Australia)

Backcountry adventurer Alex Peterson speed riding on the south side of Mount Hood, Oregon (© Richard Hallman/DEEPOL by plainpicture)(Bing Australia)

Walruses near Kvitøya in the Svalbard archipelago, Norway (© Ole Jorgen Liodden/Minden Pictures)(Bing Australia)

Eurasian red squirrel in the Cairngorms, Scottish Highlands, Scotland (© Images from BarbAnna/Getty Images)(Bing Australia)

Northern lights near Whitehorse in Yukon, Canada (© Design Pics/Danita Delimont)(Bing Australia)

The Taj Mahal for India's Republic Day (© Michele Falzone/plainpicture)(Bing Australia)

Sunlit ridges against volcanic scree on Eyjafjallajökull, a volcano in Iceland (© Erlend Haarberg/Minden Pictures)(Bing Australia)

The Chinese New Year celebration in Xi'an, China (© Aleksandar Plavevski/Shutterstock)(Bing Australia)

Sydney Opera House Australia Day celebration in 2018 (© Michal Ziarno/Shutterstock)(Bing Australia)

View of New York City from the International Space Station (© NASA Photo/Alamy)(Bing Australia)

Aerial view of the glaciers and mountains of Kluane National Park and Reserve, near Haines Junction, Yukon, Canada (© Robert Postma/plainpicture)(Bing Australia)

Semuc Champey nature park in Guatemala (© Joel Sharpe/Getty Images)(Bing Australia)

Aerial view of car crossing over the frozen surface of Lake Baikal, Russia (© Amazing Aerial Agency/Offset)(Bing Australia)

Painted bollards by Jan Mitchell along the Geelong waterfront precinct (© Rachel Lewis/Lonely Planet Images/Getty Images Plus)(Bing Australia)

A reddish egret hunts in Fort De Soto Park, Florida (© Brian Lasenby/Getty Images)(Bing Australia)