Scarlet macaw in Costa Rica

Rainbow Pool and the field of stars in the World War II Memorial with the Lincoln Memorial in the background, Washington, DC

Hyalite Creek in the Custer Gallatin National Forest, Montana

Bungle Bungle Range in Purnululu National Park, Australia

Golden Gate Bridge and Marin Headlands photographed from Golden Gate Overlook in San Francisco, California

Hanging bridge in the Monteverde Cloud Forest Reserve, Costa Rica

Alhambra in Granada, Andalusia, Spain

Kornati National Park, Croatia

Florida red-bellied turtle in Rainbow Springs, Rainbow Springs State Park, Florida

A Burchell's zebra and a cattle egret at the Rietvlei Nature Reserve in South Africa

Albion Falls, Hamilton, Ontario, Canada

Honey bee flying over crocuses in the Tatra Mountains, Poland

Glass bridge of Zhangjiajie, Hunan, China

Museum at Prairiefire, Overland Park, Kansas

Salt ponds of Maras in Peru's Sacred Valley of the Incas

Burrowing owl chicks gaze out from among flowers near the Pawnee National Grassland in Colorado

Panoramic view of the Bernina Range with blood moon, Eastern Alps, Engadin, Switzerland

Windmills, Kinderdijk, Netherlands

Masai giraffe in Maasai Mara, Kenya

Nurses serving with the American Red Cross in Paris, France, in May 1919