Castelbouc and the Gorges du Tarn along the Tarn River in France (© Stefan Schurr/Westend61/Offset)(Bing United States)

A Diego Rivera painting to celebrate Labor Day (© James R. Martin/Shutterstock)(Bing United States)

Guaita Tower in San Marino (© Piercarlo Abate/Shutterstock)(Bing United States)

'Vessel' at Hudson Yards in New York City (© Paparacy/Shutterstock)(Bing United States)

Tegallalang terrace farms in Ubud, Bali, Indonesia (© gorgeoussab/Shutterstock)(Bing United States)

Castillo San Felipe del Morro in Old San Juan, Puerto Rico (© grandriver/Getty Images)(Bing United States)

Mount Fanjing, the highest peak of the Wuling Mountains, in southwest China (© Keitma/Alamy)(Bing United States)

Southern yellow-billed hornbills in Kruger National Park, South Africa (© Ben Cranke/Getty Image)(Bing United States)

Central Coast vineyards in Arroyo Grande, California (© Ian Shive/Tandem Motion + Stills)(Bing United States)

Gerenuk in Tsavo National Parks, Kenya (© Byrdyak/iStock/Getty Images Plus)(Bing United States)

The Tower of Voices at the Flight 93 National Memorial in Shanksville, Pennsylvania (© Amy Cicconi/Alamy)(Bing United States)

The Milky Way seen from Canyonlands National Park in Utah (© Cavan Images/Offset)(Bing United States)

Drones light up the sky over Shenzhen, China (© Liang Weiming/VCG via Getty Images)(Bing United States)

Walruses near Kvitøya in the Svalbard archipelago, Norway (© Ole Jorgen Liodden/Minden Pictures)(Bing United States)

The Vochol, a Volkswagen Beetle decorated with traditional Huichol beadwork (© Helen H. Richardson/Getty Images)(Bing United States)

Detail of a portobello mushroom (© Justin Galloway/Offset)(Bing United States)

Detail of the Statue of Liberty, on Liberty Island, New York (© Judy Dillon/Getty Images Plus)(Bing United States)

The Villarrica volcano in Chile on September 2, 2018 (© Cristobal Saavedra Escobar/Reuters)(Bing United States)

A common loon in the Superior National Forest in Minnesota (© Jim Brandenburg/Minden Pictures)(Bing United States)

Quaking aspens of Pando in Fishlake National Forest, Utah (© Don Paulson/Danita Delimont)(Bing United States)

'The Wall for Peace' and the Eiffel Tower in Paris for the International Day of Peace (© Prisma by Dukas Presseagentur GmbH/Alamy)(Bing United States)

Fireworks during La Mercè Festival in Barcelona, Spain (© Lucas Vallecillos/age fotostock)(Bing United States)

Equinox at the Temple of Kukulcan in Chichen Itza, Mexico (© Somatuscani/Getty Images Plus)(Bing United States)

A mountain gorilla eating in a tree in the Bwindi Impenetrable National Park, Uganda (© Robert Haasmann/Minden Pictures)(Bing United States)

Arctic surfing in the Lofoten Islands, Norway, for the Lofoten Masters (© Nicolás Pina/Tandem Stills + Motion)(Bing United States)

Sea otters in Alaska’s Inside Passage (© Erika Skogg/Getty Images)(Bing United States)

The Nankoweap Granaries of the Grand Canyon in Arizona (© Jack Dykinga/Minden Pictures)(Bing United States)

Hocking Hills State Park in Ohio for National Public Lands Day (© Sara Winter/Getty Images Plus)(Bing United States)

Autumnal landscape near the town of Clavijo in Spain's Rioja wine region (© Olimpio Fantuz/eStock Photo)(Bing United States)

An aerial view of Beijing Daxing International Airport, China (© Xinhua/Alamy)(Bing United States)