Park City, Utah (© Kruck20/Getty Images)

White Sands National Park, New Mexico (© Andrea Harrell/Tandem Stills + Motion)

Muniellos Nature Reserve in Asturias, Spain (© Andres M. Dominguez/Minden Pictures)

Inscription Wall at the Martin Luther King Jr. Memorial in Washington, DC (© Ken Howard/Alamy)

Aura River in Turku, Finland (© Jarmo Piironen/Alamy)

Domestic donkey feeding on cherry twigs (© Juniors Bildarchiv GmbH/Alamy)

Giant kelp in the Channel Islands National Marine Sanctuary, California (© Brandon Cole Images/Shutterstock)

Rumelihisarı on the Bosporus Strait at Istanbul, Türkiye (© Drone in Wonderland/Amazing Aerial Agency)

‘Umschreibung,’ a sculpture by artist Olafur Eliasson in Munich, Germany (© Manfred Bail/Alamy)

Hummock ice on Lake Peipus in Estonia (© Sven Zacek/Minden Pictures)