'El Problema del Caballo' by Claudia Fontes in Venice, Italy (© Marco Secchi/Getty Images)

Wisteria blooms at Kawachi Fuji Gardens in Kitakyushu, Japan (© Wibowo Rusli/Alamy)

Ruff male displaying on Varanger Peninsula in Norway (© Winfried Wisniewski/Minden Pictures)

The installation 'Waldplastik' during Blue Night in Nuremberg, German (© Daniel Karmann/Shutterstock)

The Skellig Islands, Skellig Michael and Little Skellig, in Ireland (© Design Pics/DanitaDelimont.com)

San Miguel de Allende, Mexico (© ferrantraite/Getty Images)

Fireweed in North Cascades National Park in Washington state (© Danita Delimont/Getty Images)

St. Mary Falls in Glacier National Park, Montana (© Pung/Shutterstock)

Peggy's Cove Lighthouse at dusk, Nova Scotia (© Darwin Wiggett/Offset)

Zebras in Serengeti National Park, Tanzania (© pchoui/Getty Images)

Island fox on Santa Cruz Island, Channel Islands National Park, California (© Ian Shive/Tandem Motion + Stills)

Historic windmills of Zaanse Schans near Amsterdam, Netherlands (© Matt Cooper/Gallery Stock)

Piping plover and its chick on Jones Beach Island, New York (© Vicki Jauron/Getty Images)

Ottawa Tulip Festival (© imageBROKER/Shutterstock)

Cannes, France, where the annual film festival begins today (© Manjik Photography/Alamy)

Midnight sun at North Cape, Norway (© Ron Bennett/Shutterstock)

Abu Simbel temples on the west shore of Lake Nasser, Egypt (© George Steinmetz/Getty Images)

A carving of artist W.O.J. Nieuwenkamp in the Pura Meduwe Karang temple in Bali, Indonesia (© John Elk III/Getty Images)

The City of Arts and Sciences in Valencia, Spain (© MAIKA 777/Getty Images)

Ghyakar village, Upper Mustang, Nepal (© Frank Bienewald/Alamy)

A Black Bear (Ursus americanus) cub in a pine tree, Jasper National Park, Alta. (© Donald M. Jones/Minden Pictures)

The Copper River Delta in Wrangell-St. Elias National Park and Preserve, Alaska (© Frans Lanting/plainpicture)

Green sea turtle with sardines near Playa Grandi Beach, Curaçao (© yfhishinuma/Getty Images Plus)

Sandcastle on Malvarrosa Beach in Valencia, Spain (© Tony French/Alamy)

Male Cape May warbler in spring (© JZHunt/Getty Images Plus)

Mont Saint-Michel for its annual marathon (© Leroy Francis/Getty Images)

Low-lying fog along the coast, Newfoundland and Labrador (© Scott Leslie/Minden Pictures)

The Lush Rainforest of Cathedral Grove, Macmillan Provincial Park, B.C. (© Robert Postma/Design Pics/Shutterstock)

Stravinsky Fountain in Paris, France (© Alessandro Saffo/eStock Photo)

42nd Street with the Chrysler Building during Manhattanhenge in 2018, New York City (© Dennis Fischer Photography/Getty Images)

Prairie mounds at Oregon’s Zumwalt Prairie (© Michael Durham/Minden Pictures)