Forest path in Great Smoky Mountains National Park, Tennessee, USA (© putmanphoto/Getty Images)

The World Vision Garden at The Hampton Court Palace Flower Show 2016 (© Ellen Rooney/Alamy Stock Photo)

Meerkat family (© anetapics/Shutterstock)

Italica, an old Roman city in Santiponce, Sevilla, Andalusia, Spain (© Moses Palermo/Amazing Aerial Agency)

Noah Beach in Daintree Rainforest, Queensland, Australia (© bjeayes/Getty Images)

Conwy Castle looking over the River Conwy, Wales (© David Chapman/Alamy Stock Photo)

Rice terraces of Mù Cang Chải, Yên Bái province, Vietnam (© Kiatanan Sugsompian/Getty Images)

Blueberries growing in the wild (© Baac3nes/Getty Images)

Talampaya National Park, La Rioja province, Argentina (© Gonzalo Azumendi/Getty Images)

Collared aracari, Costa Rica (© Juan Carlos Vindas/Getty Images)

Gangi, Sicily, Italy (© Andrea Caruso/Amazing Aerial Agency)

Wildflowers in Mount Rainier National Park, Washington, USA (© RomanKhomlyak/Getty Images)

Fairy chimneys and cave dwellings in Cappadocia, Türkiye (© Storm Is Me/Shutterstock)

Burrowing owl chicks near a burrow, Wyoming, USA (© Danita Delimont/Getty Images)

Tateishi Park, Kanagawa Prefecture, Japan (© blew_s/Shutterstock)

The neolithic settlement of Skara Brae, Orkney, Scotland (© Paul Williams - FunkyStock/Getty Images)

Medieval city of Rothenburg ob der Tauber, Germany (© kanuman/Getty Images)

Coral reef in the Indian Ocean, Mayotte, France (© Gabriel Barathieu/Minden Pictures)

A young jaguar on a riverbank, Pantanal, Brazil (© Tambako the Jaguar/Getty Images)

The moon (© Victor Blum/Getty Images)

Wooden fishing boats at Kendwa village, Zanzibar, Tanzania (© Lubos Paukeje/Alamy Stock Photo)

Buckingham Palace, London (© Zoonar/Andriy Kravchenko/Alamy Stock Photo)

Methoni Castle, Messinia, Greece (© Andrew Mayovskyy/Shutterstock)

Methoni Castle, Messenia, Greece (© Andrew Mayovskyy/Shutterstock)

Pont Neuf over the Seine, Paris, France (© f11photo/Getty Images)

Cowes Harbour, Cowes, Isle of Wight, England (© LyonesseImages/Alamy Stock Photo)

Bathing huts on the beach in Skåne County, Sweden (© Martin Wahlborg/Getty Images)

Tiger siblings in Jim Corbett National Park, Uttarakhand, India (© Sourabh Bharti/Getty Images)

Impala and red-billed oxpecker, South Africa (© Matrishva Vyas/Getty Images)

Hoodoos, Sunset Point, Bryce Canyon National Park, Utah, USA (© Tim Fitzharris/Minden Pictures)

Floating market, Kaptai Lake, Rangamati, Bangladesh (© Azim Khan Ronnie/Amazing Aerial Agency)