Pfeiffer Beach at Pfeiffer Big Sur State Park, California (© Jingyu Wu/500px)(Bing United States)

Pfeiffer Beach at Pfeiffer Big Sur State Park, California (© Jingyu Wu/500px)(Bing United States)

Eurasian red squirrel in Cairngorms National Park, Scotland (© Sue Demetriou/Offset)(Bing United States)

Eurasian red squirrel in Cairngorms National Park, Scotland (© Sue Demetriou/Offset)(Bing United States)

The Mont Blanc massif, seen from Mont Salève, France (© Niggli/Nimia)(Bing United States)

The Mont Blanc massif, seen from Mont Salève, France (© Niggli/Nimia)(Bing United States)

Minerva Terrace in Mammoth Hot Springs at Yellowstone National Park, Wyoming (© Tim Fitzharris/Minden Pictures)(Bing United States)

Minerva Terrace in Mammoth Hot Springs at Yellowstone National Park, Wyoming (© Tim Fitzharris/Minden Pictures)(Bing United States)

Bora Bora in the Leeward Islands of French Polynesia (© Frans Lanting/Getty Images)(Bing United States)

Bora Bora in the Leeward Islands of French Polynesia (© Frans Lanting/Getty Images)(Bing United States)

Heavy frost in Las Médulas, Spain (© Juan Carlos Muñoz/age fotostock)(Bing United States)

Heavy frost in Las Médulas, Spain (© Juan Carlos Muñoz/age fotostock)(Bing United States)

Martin Luther King, Jr. Memorial at Yerba Buena Gardens, San Francisco, California (© Josh Norem/500px)(Bing United States)

Martin Luther King, Jr. Memorial at Yerba Buena Gardens, San Francisco, California (© Josh Norem/500px)(Bing United States)

The Reading Room and Great Court of the British Museum, London (© Aardvark/Alamy)(Bing United States)

The Reading Room and Great Court of the British Museum, London (© Aardvark/Alamy)(Bing United States)

Kongde Ri looms over Namche Bazaar in Sagarmatha National Park, Nepal (© Andrew Peacock/Aurora Photos)(Bing United States)

Kongde Ri looms over Namche Bazaar in Sagarmatha National Park, Nepal (© Andrew Peacock/Aurora Photos)(Bing United States)

Rhesus macaques in the Wulingyuan wilderness near Zhangjiajie, China (© Xinhua News Agency/REX/Shutterstock)(Bing United States)

Rhesus macaques in the Wulingyuan wilderness near Zhangjiajie, China (© Xinhua News Agency/REX/Shutterstock)(Bing United States)

Temple of Valadier, Genga, Italy (© Westend61/Getty Images)(Bing United States)

Temple of Valadier, Genga, Italy (© Westend61/Getty Images)(Bing United States)

An irrigation system in southern Egypt (© NASA Images)(Bing United States)

An irrigation system in southern Egypt (© NASA Images)(Bing United States)

Eifel National Park, North Rhine-Westphalia, Germany (© Danny Laps/Minden Pictures)(Bing United States)

Eifel National Park, North Rhine-Westphalia, Germany (© Danny Laps/Minden Pictures)(Bing United States)

Ross Fountain at Butchart Gardens in Victoria, British Columbia, Canada (© Reimar 8/Alamy)(Bing United States)

Ross Fountain at Butchart Gardens in Victoria, British Columbia, Canada (© Reimar 8/Alamy)(Bing United States)

Trakai Island Castle in Trakai, Lithuania (© Conor MacNeill/Tandem Stills + Motion)(Bing United States)

Trakai Island Castle in Trakai, Lithuania (© Conor MacNeill/Tandem Stills + Motion)(Bing United States)

Coyote in Marymoor Park, Redmond, Washington (© Joseph Calev)(Bing United States)

Coyote in Marymoor Park, Redmond, Washington (© Joseph Calev)(Bing United States)

Karaweik Palace on Kandawgyi Lake, Yangon, Myanmar (© Etakundoy/Shutterstock)(Bing United States)

Karaweik Palace on Kandawgyi Lake, Yangon, Myanmar (© Etakundoy/Shutterstock)(Bing United States)

Blue-and-yellow macaws flying over the Amazon rainforest in Brazil (© Nicky van Veenendaal/500px)(Bing United States)

Blue-and-yellow macaws flying over the Amazon rainforest in Brazil (© Nicky van Veenendaal/500px)(Bing United States)

Lake Wakatipu near Queenstown, New Zealand (© Raimondo Restelli/500px)(Bing United States)

Lake Wakatipu near Queenstown, New Zealand (© Raimondo Restelli/500px)(Bing United States)

An underwater view of Aktun Ha cenote near Tulum, Quintana Roo, Mexico (© Christian Vizl/Tandem Stills + Motion)(Bing United States)

An underwater view of Aktun Ha cenote near Tulum, Quintana Roo, Mexico (© Christian Vizl/Tandem Stills + Motion)(Bing United States)

A climber in the Cabinet Mountains Wilderness in Montana (© Steven Gnam/Tandem Stills + Motion)(Bing United States)

A climber in the Cabinet Mountains Wilderness in Montana (© Steven Gnam/Tandem Stills + Motion)(Bing United States)

Pair of Ural owls in Hokkaido, Japan (© JTB Media Creation, Inc./Alamy)(Bing United States)

Pair of Ural owls in Hokkaido, Japan (© JTB Media Creation, Inc./Alamy)(Bing United States)