'Industries of California' mural by Ralph Stackpole at Coit Tower, San Francisco, California (© David R. Frazier Photolibrary, Inc./Alamy)

Lake Fyans, Grampians National Park, Victoria, Australia (© tracielouise/Getty Images)

Green-crowned brilliant hummingbirds feeding on lobster-claw flowers, Costa Rica (© Paul Hobson/Nature Picture Library)

Westerheversand Lighthouse in Westerhever, Schleswig-Holstein, Germany (© bluejayphoto/Getty Images)

Coyote Buttes, Vermilion Cliffs National Monument, Arizona (© James Hager/Getty Images)

Traditional beach huts, Southwold, Suffolk Heritage Coast, England (© stevendocwra/Getty Images)

Horsehair parachute fungus, Belarus (© Máté/Nature Picture Library)