Cavern in Pictured Rocks National Lakeshore on Lake Superior, USA (© Kenneth Keifer/Getty Images)

Isola Bella, Lake Maggiore, Piedmont, Italy (© Massimo Ripani/eStock Photo)

Officer wearing a rakhi on his wrist during rakshabandhan (© Jaipal Singh/EPA/Shutterstock)

White-tailed doe and fawn in Wisconsin, USA (© Karel Bock/Shutterstock)

White-tailed doe and fawn in Wisconsin (© Karel Bock/Shutterstock)

Oyster farm offshore from Notojima Island, Ishikawa prefecture, Japan (© divedog/Shutterstock)

Young humpback whale giving its mother a hug off the coast of Tonga (© Biosphoto/Alamy)

Infinity Bridge in Stockton-on-Tees, England (© Robert Smith/Alamy)

Los Órganos basalt rock formation, La Gomera, Canary Islands, Spain (© Martin Siepmann/Image BROKER/Offset by Shutterstock)

Lion cubs hiding in tall grass in the Kalahari Desert of Botswana (© Jami Tarris/Getty Images)

Bioluminescent sea fireflies along the shore of Okayama, Japan (© tdub_video/Getty Images)

Fossil skeleton of Tyrannosaurus rex (© Corbin17/Alamy)

｢並んだサーフボード｣ (© plainpicture/Tony Arruza)

Soldiers stand guard in front of a tricolour flag rehearsal (© Adnan Abidi/Reuters)

An adult burrowing owl emerges from its burrow at sunset in Davis, California, USA (© Neil Losin/Tandem Stills + Motion)

Sun deity on arch of Parsi Fire-Temple, south Mumbai (© Danny Ye/Shutterstock)

Panoramic view of Lulworth Cove at sunset in Dorset, England (© Adrian Baker/Shutterstock)

Aerial view of La Geria vineyards, Lanzarote, Canary Islands, Spain (© Orbon Alija/Getty Images)

The Highlands of Iceland (© Kevin Krautgartner/Offset by Shutterstock)

Multicoloured lobster buoys, Acadia National Park, Maine, USA (© Cheri Alguire/Shutterstock)

Urquhart Castle and Loch Ness in the Scottish Highlands (© AWL Images/Danita Delimont)

Stars reflecting in Totensee, a mountain lake at Grimsel Pass, Kanton Bern, Switzerland (© magodevita/Getty Images)

Stars reflected in the Totensee, a mountain lake at Grimsel Pass, Switzerland (© magodevita/Getty Images)

Giant sequoia trees in Sequoia and Kings Canyon National Parks, California, USA (© lucky-photographer/Getty Images)

Spotted Lake in the Okanagan region of British Columbia, Canada (© Galyna Andrushko/Shutterstock)

Spotted Lake in the Okanagan region of British Columbia, Canada (© Galyna Andrushko/Shutterstock)

Château d'If in Marseille, France (© Boris Stroujko/Shutterstock)

Bicycle sculptures at the Col d'Aubisque, Hautes Pyrenees, France (© Fco. Javier Sobrino/age fotostock)

Hay bales in a field in Jutland, Denmark (© Nick Brundle Photography/Getty Images)

Sunlight piercing a forest in Garajonay National Park, La Gomera, Spain (© Martin Siepmann/Westend61/Offset by Shutterstock)

Ganesh Pol, Ganesh Gate, in Amber Palace, near Jaipur (© Huw Jones/Lonely Planet Images/Getty Images)