Masai giraffe mother grooming her calf in the Serengeti, Tanzania (© Alberto Cassani/Getty Images)

Seljalandsfoss waterfall at sunset, Iceland (© Tom Mackie/AWL/plainpicture)

Texas State Capitol in Austin (© joe daniel price/Getty Images)

Asian swallowtail butterfly on a red spider lily (© lzh/Getty Images)

Maritime forest in Cumberland Island National Seashore, Georgia (© Chris Moore/TANDEM Stills + Motion)

Sea turtle, Fernando de Noronha, Brazil (© João Vianna/Getty Images)

Lesser rhea adult male with chicks, Torres del Paine National Park, Patagonia, Chile (© Ignacio Yufera/Minden Pictures)

Flag display at the US Capitol, Washington, DC (© kmiragaya/Adobe Stock)

Vila Franca Islet, São Miguel Island, Azores, Portugal (© ARoxo/Getty Images)

Chisos Mountains, Big Bend National Park, Texas (© Dean Fikar/Getty Images)