Alpine marmots near Grossglockner High Alpine Road, Austria (© Weimann/Getty Images)(Bing Australia)

Palau de la Música Catalana in Barcelona, Spain (© Luis Davilla/age fotostock)(Bing Australia)

Forest path in Padley Gorge in Derbyshire, England (© James Mills/500px)(Bing Australia)

A rural portion of Gmina Barczewo, Olsztyn County, Poland (© jesiotr9/Getty Images)(Bing Australia)

Stairwell in the Department of Philosophy building of New York University, New York City (© Alex Fradkin/Gallery Stock)(Bing Australia)

Sunrise over Utah Lake near Provo, Utah (© Nimia)(Bing Australia)

Itapuã Lighthouse in Salvador, Bahia, Brazil (© Uiler Costa/Offset)(Bing Australia)

Mangroves in Garigal National Park, Sydney, New South Wales (© Cassandra Hannagan/Fancy Images/plainpicture)(Bing Australia)

Male Himalayan monal in Sagarmāthā National Park, Nepal (© Patricio Robles Gil/Minden Pictures)(Bing Australia)

Beach near Tofino, Vancouver Island, Canada (© Cavan Images/Offset)(Bing Australia)

Upside-down jellyfish in Jardines de la Reina National Park, Cuba (© Pete Oxford/Minden Pictures)(Bing Australia)

Satin bowerbird in Bunya Mountains National Park, Queensland (© Martin Willis/Minden Pictures)(Bing Australia)

Wilson Stump on Yakushima Island, Japan (© Mitsushi Okada/Getty Images)(Bing Australia)

Elephants crossing Luangwa River, Zambia (© Frans Lanting/Gallery Stock)(Bing Australia)

James Turrell’s ‘Twilight Epiphany’ Skyspace at Rice University, Houston, Texas (© Alex Fradkin/Gallery Stock)(Bing Australia)

Waterfalls in a canyon of Siberia’s Putorana Plateau, Russia (© Sergey Gorshkov/Minden Pictures)(Bing Australia)

Vieste on the Adriatic coast of Italy (© Peter Adams Photography Ltd/Alamy)(Bing Australia)

Rhesus macaques in the Wulingyuan wilderness near Zhangjiajie, China (© Xinhua News Agency/REX/Shutterstock)(Bing Australia)

Surfers at Bar Beach near Newcastle, New South Wales (© Fairfax Media/Getty Images)(Bing Australia)

Ice in a crater of the Vastitas Borealis region of Mars (© VUZE/NASA/Alamy)(Bing Australia)

The Fortifications of Kotor, Montenegro (© Slavica Stajić/500px)(Bing Australia)

The Opera Ball at the Vienna State Opera, Austria (© APA-PictureDesk GmbH/REX/Shutterstock)(Bing Australia)

The abandoned village of Houtouwan on Shengshan Island, China (© VCG/Getty Images)(Bing Australia)

Two hoatzins, perched in Brazil (© Morten Ross/500px)(Bing Australia)

Feather star clinging to harp gorgonian in the Great Barrier Reef, Queensland (© Fred Bavendam/Minden Pictures/plainpicture)(Bing Australia)

View of the Griffith Park Observatory, Los Angeles, California (© Walter Bibikow/Getty Images)(Bing Australia)

North American river otters in Yellowstone National Park, Wyoming (© mlharing/istock/Getty Images)(Bing Australia)