Plains zebra foal in Etosha National Park, Namibia

© Sharon Heald/Nature Picture Library

Mount Everest summit, Sagarmatha National Park, Nepal

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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

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Tre Cime Nature Park, South Tyrol, Italy

© Adisorn Fineday Chutikunakorn/Getty Images

Turtles with butterflies

© Patrick Gallet/Getty Images