Medieval towers in Mestia, Upper Svaneti, Georgia (© photoaliona/Getty Images)

Blue hour in Trondheim, Norway (© Jeanny Mueller/Getty Images)

Archway Islands, Wharariki Beach, South Island, New Zealand (© Francesco Vaninetti/AWL/plainpicture)

Scottish Blackface sheep, Aberdeenshire, Scotland (© Mike Powles/Getty Images)

Golden Bridge, Bà Nà Hills, Da Nang, Vietnam (© Hien Phung Thu/Shutterstock)

Ribblehead Viaduct and Ingleborough mountain, North Yorkshire, England (© AWL Images/DanitaDelimont.com)

Young alpine marmot (© Jonas Fichtner-Pflaum/Getty Images)

National Museum of African American History & Culture, Washington, DC (© BrianPIrwin/Shutterstock)

Plains zebras at sunrise, Mokala National Park, South Africa (© EcoPrint/Shutterstock)

La Brecha de Rolando, Ordesa y Monte Perdido National Park, Spain (© Inaki Relanzon/Nature Picture Library/Alamy)