Royal Mile, Edinburgh, Scotland (© MEDITERRANEAN/Getty Images)

Petroglyphs near Fruita in Capitol Reef National Park, Utah (© Nicolas VINCENT/Adobe Stock)

Sunflowers in a field in summer (© Arsgera/Shutterstock)

Great gray owls in their nest, Finland (© imageBROKER.com/Alamy)

Tide pools in La Jolla, California (© Andrew Shoemaker/DanitaDelimont.com)

Kalalau Beach on the Nā Pali Coast, Kauai, Hawaii (© Russ Bishop/DanitaDelimont.com)

Gasparilla Island Rear Range Light, Boca Grande, Florida (© Wiltser/Getty Images)

Three Musketeers Falls at Iguazú Falls, Argentina (© Mark Meredith/Getty Images)

Ngātoroirangi Mine Bay Māori Rock Carvings on Lake Taupō, New Zealand (© Joppi/Getty Images)

Lioness in Maasai Mara National Reserve, Kenya (© Tandem Stock/Adobe Stock)

Village of Santa Maddalena, Dolomites, Italy (© Sakrapee Nopparat/Getty Images)

African elephant herd, Amboseli National Park, Kenya (© Chase Dekker/Minden Pictures)

A man rappels off Corona Arch near Moab, Utah (© Grant Ordelheide/TANDEM Stills + Motion)

Cable car station on Piz Nair mountain, Graubünden, Switzerland (© Roberto Moiola/Alamy)

Spotted eagle rays, San Cristóbal Island, Galápagos Islands, Ecuador (© Tui De Roy/Minden Pictures)

Colorful beehives in Italy (© Roberto Caucino/Shutterstock)

Lyngvig Lighthouse, Hvide Sande, Denmark (© Caroline Brundle Bugge/Getty Images)

Avalanche Lake Trail at Adirondack High Peaks, New York (© Posnov/Getty Images)

Solar Impulse 2 at Kalaeloa Airport, Honolulu, Hawaii (© Solar Impulse/Revillard/Sipa/Shutterstock)

The citadel in Bonifacio, Southern Corsica, France (© Marc Dozier/Getty Images)

Wheatear and flowering heather, Peak District National Park, England (© Ben Hall/Nature Picture Library)

Rolling hills of the Palouse, Washington (© svetlana57/Getty Images)

St. Barbara's Cathedral, Kutná Hora, Czechia (© Castka/Getty Images)

European fallow deer, England (© Enrique Aguirre Aves/Getty Images)

Calcite Springs Overlook and Yellowstone River, Yellowstone National Park, Wyoming (© Rebecca L. Latson/Getty Images)

Trullo buildings in Alberobello, Apulia, Italy (© Feng Wei Photography/Getty Images)

Great white egret, Hungary (© Markus Varesvuo/Nature Picture Library)

Aerial view of Plaza Mayor, Madrid, Spain (© AirPano LLC/Amazing Aerial Agency)

Whale shark off the coast of Alifu Dhaalu Atoll, Maldives (© Bachir Moukarzel/Amazing Aerial Agency)

Scotts Bluff National Monument in Gering, Nebraska (© Hawk Buckman/Getty Images)