Vasco da Gama Bridge, Lisbon, Portugal (© Achim Thomae/Getty Images)

Iguazu Falls at the border of Argentina and Brazil (© AirPano LLC/Amazing Aerial Agency)

Interior of the Stockholm Public Library, Sweden (© Andrei Hrabun/Alamy)

Anna’s hummingbird, Santa Cruz, California (© yhelfman/Getty Images)

Ancient beech tree, Glenariff Forest Park, County Antrim, Northern Ireland (© Dawid K Photography/Shutterstock)

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)