Toronto city skyline seen from Lake Ontario, Canada (© Roberto Machado Noa/Getty Images)

Dusky eagle-owls, Pakistan (© zahoor salmi/Getty Images)

Crystal Lake in the Enchantments, Alpine Lakes Wilderness, Washington (© Mitch Pittman/Tandem Stills + Motion)

‘Power of the Titans’ mural by Andrei Krautsou, North Kansas City, Missouri (© Stephen Taylor/Alamy)

River Thames, London, England (© Puthipong Worasaran/Getty Images)

Rock formations and sand dunes in the Sahara, Tassili n’Ajjer, Algeria (© Airpano/Amazing Aerial Agency)

A whale shark in Cenderawasih Bay, West Papua, Indonesia (© Andy Lerner/Tandem Stills + Motion)

Castellfollit de la Roca, Catalonia, Spain (© Eloi_Omella/Getty Images)

Montmartre and Sacre Cœur, Paris, France (© Tuul & Bruno Morandi/Getty Images)

Young black caiman, Tambopata National Reserve, Peru (© Maxime Aliaga/Minden Pictures)