Watkins Glen State Park's Rainbow Falls in the Finger Lakes region of upstate New York, USA (© Kenneth Keifer/Alamy)

Smith Rock State Park, Oregon, USA (© Manuela Durson/Getty Images)

Smith Rock State Park, Oregon (© Manuela Durson/Getty Images)

Lujiazui Financial District, Shanghai, China (© Jackal Pan/Getty Images)

A bull in the foothills of Mount Pico on Pico Island in the Portuguese archipelago of the Azores (© Atmo-Sphere/Getty Images)

Beaver dam in the Sawtooth National Forest, Idaho (© Charles Knowles/Alamy)

A bull stands in a field under the gaze of Mount Pico, Pico Island, Azores (© Atmo-Sphere/Getty Images)

Valletta, Malta (© Deejpilot/GettyImages)

A bearded reedling in Elmley National Nature Reserve in Kent, England (© Mark Bridger/Offset by Shutterstock)

Huay Mae Khamin waterfall in Khuean Srinagarindra National Park, Thailand (© ImpaKPro/Getty Images)

Aerial view of the lighthouse at Kaup, Karnataka (© Amith Nag Photography/Getty Images)

Rocamadour, France (© Rrrainbow/Getty Images)

Rocamadour, France (© Rrrainbow/Getty Images)

Sand dunes with Sangre de Cristo Mountains in the background, Great Sand Dunes National Park and Preserve, Colorado (© Tim Fitzharris/Minden Pictures)

Ruby-throated hummingbird feeding on yellow bells in the Texas Hill Country (© Rolf Nussbaumer/Danita Delimont)

Lifeguard shack at sunset on the beach at The Entrance, Central Coast, New South Wales, Australia (© Yury Prokopenko/Getty Images)

Sunset landscape and smog in Bordeaux vineyard, France (© agefotostock/Alamy)

Bordeaux vineyard, France (© agefotostock/Alamy)

Icelandic sheep ready for réttir (© Pieter Tytgat/Getty Images)

Sea otter mother and newborn pup in Monterey Bay, USA (© Suzi Eszterhas/Minden Pictures)

Sea otter mother and newborn pup in Monterey Bay, California (© Suzi Eszterhas/Minden Pictures)

Purple and pink heather on heathland near Studland, Dorset, England (© allou/iStock/Getty Images Plus)

Two kingfishers at the Nagarahole National Park, Karnataka (© Pradeep BR/shutterstock)

Decorated cows for the Almabtrieb, where the cattle are led back from their alpine pasture, Tannheimer Tal, a valley in Tyrol, Austria (© Hans Lippert/Alamy)

Loarre castle, Huesca, Aragón, Spain (© Sebastian Wasek/Alamy)

Fraser River east of Vancouver, British Columbia, Canada, with the Golden Ears mountains (© LeonU/Getty Images)

Blue shark near the Azores in the North Atlantic Ocean (© Nuno Sa/Minden Pictures)

Steeply terraced vineyards of the Lavaux region on the shores of Lake Geneva, Switzerland (© Yves Marcoux/plainpicture)

A saturniid moth in Mole National Park in Larabanga, Ghana (© Robert Thompson/Minden Pictures)

｢満月｣ (© Aflo Co., Ltd/Alamy Stock Photo)