Colorful façade of a building in Little India, Singapore (© Blue Sky Studio/Shutterstock)(Bing United States)

Hot air balloons flying during the Albuquerque International Balloon Fiesta, New Mexico (© Blaine Harrington III/Corbis)(Bing United States)

The Carina Nebula (© NASA, ESA, N. Smith (University of California, Berkeley), and the Hubble Heritage Team (STScI/AURA))(Bing United States)

A red fox in the forest of Elfvik near Lidingö, Sweden (© Eddie Granlund/Corbis)(Bing United States)

Elephant Trunk Hill, Guilin, China (© Ajancso/Shutterstock)(Bing United States)

Saturniid moth, Yasuni National Park, Ecuador (© Pete Oxford/Minden Pictures)(Bing United States)

Fall foliage in Hudson Valley, New York (© Corbis)(Bing United States)

Water droplets on rough-stalked feather moss (© Duncan Usher/Minden Pictures)(Bing United States)

Boardwalk of Cayeux-sur-Mer, France (© Bryant Nicolas/Alamy)(Bing United States)

Rock art in Sego Canyon, Utah (© Gary Whitton/Alamy)(Bing United States)

The Venetian Harbor and Old Town of Chania, Greece (© Hercules Milas/Alamy)(Bing United States)

A tarsier at rest, Bohol Island, Philippines (© Deddeda/Getty Images)(Bing United States)

Rapa River delta in Sarek National Park, Sweden (© George Steinmetz/Corbis)(Bing United States)

Male gemsboks clash at Etosha National Park, Namibia (© Johan Swanepoel/Shutterstock)(Bing United States)

Chigmit Mountains and Lake Clark National Park and Preserve, Alaska (© Ian Shive/Tandem Stills + Motion)(Bing United States)

Autumn aspens in Grand Teton National Park, Wyoming (© Matt Anderson Photography/Getty Images)(Bing United States)

‘Spark art’ photography (© DI Mandl Alexander/Solent News/REX)(Bing United States)

Crested pigeon in Uluṟu-Kata Tjuṯa National Park, Australia (© Photodigitall.nl/Shutterstock)(Bing United States)

Flatiron Building, New York City (© Tony Shi Photography/Getty Images)(Bing United States)

Skagsanden, Lofoten Islands, Norway (© imageBROKER/REX Shutterstock)(Bing United States)

Labyrinth in the Chartres Cathedral, France (© Sylvain Sonnet/Getty Images)(Bing United States)

South Nahanni River, Nahanni National Park Reserve, Northwest Territories, Canada (© Daryl Benson/Corbis)(Bing United States)

Jardin du Luxembourg, Paris, France (© Jean-Pierre Lescourret/Getty Images)(Bing United States)

Xingping on the Li River in Guangxi, China (© naes/Getty Images)(Bing United States)

Brooklyn Bridge-City Hall/Chambers Street subway station ceiling, New York City (© Mick C./500px)(Bing United States)

A male red deer in London’s Richmond Park, England (© Ian Schofield/Offset)(Bing United States)

A weeping willow tree (© Rolf Nussbaumer Photography/Alamy)(Bing United States)

Marshall Point Lighthouse near Port Clyde, Maine (© Stephen Ippolito/REX)(Bing United States)

Happy Halloween! (© Shutterstock)(Bing United States)