Aerial view of Everglades National Park, Florida (© Tetra Images/Getty Images)

Plains zebra foal in Etosha National Park, Namibia (© Sharon Heald/Nature Picture Library)

Mount Everest summit, Sagarmatha National Park, Nepal (© fotoVoyager/Getty Images)

Old city wall of Hwaseong Fortress, Suwon, South Korea (© aomam/Getty Images)

Sea otter, Kachemak Bay, Homer, Alaska (© roclwyr/Getty Images)

Lupine flowers in bloom, Northern California (© Jeffrey Lewis/Tandem Stills + Motion)

Memorial Amphitheater at Arlington National Cemetery, Arlington, Virginia (© idesignimages/Getty Images)

Tre Cime Nature Park, South Tyrol, Italy (© Adisorn Fineday Chutikunakorn/Getty Images)

Turtles with butterflies (© Patrick Gallet/Getty Images)

Kauehi Atoll, Tuamotu Archipelago, French Polynesia (© WaterFrame_dpr/Alamy)