Bridalveil Fall, Yosemite National Park, California (© Jeff Foott/Minden Pictures)(Bing United States)

Hot air balloons at the Albuquerque International Balloon Fiesta in Albuquerque, New Mexico (© gmeland/Shutterstock)(Bing United States)

The Port House, designed by Zaha Hadid Architects, Antwerp, Belgium (© Dmitry Rukhlenko/Alamy)(Bing United States)

Cosmic Cliffs in the Carina Nebula (© NASA, ESA, CSA, and STScI)(Bing United States)

Caribbean flamingos, Ría Lagartos Biosphere Reserve, Yucatán Peninsula, Mexico (© Claudio Contreras/Minden Pictures)(Bing United States)

Basque Coast Geopark in the Bay of Biscay near Bilbao, Spain (© Olimpio Fantuz/eStock Photo)(Bing United States)

Designs projected on the Oberbaum Bridge during the yearly Festival of Lights in Berlin, Germany (© John MacDougall/AFP via Getty Images)(Bing United States)

Glass octopus in the Atlantic Ocean off Cabo Verde (© Solvin Zankl/Minden Pictures)(Bing United States)

Phytoplankton blooming in the Chukchi Sea off the coast of Alaska (© Norman Kuring/Kathryn Hansen/U.S. Geological Survey/NASA)(Bing United States)

The 'Circle of Sacred Smoke' sculpture by Junkyu Muto frames Devils Tower in Wyoming (© Nagel Photography/Shutterstock)(Bing United States)

Wall screw-moss glistening with water droplets, Netherlands (© Arjan Troost/Minden Pictures)(Bing United States)

Ammonite Pavement at Monmouth Beach, Jurassic Coast World Heritage Site, Dorset, England (© AWL Images/Danita Delimont)(Bing United States)

Bull and female moose in Denali National Park, Alaska (© Yva Momatiuk and John Eastcott/Minden Pictures)(Bing United States)

Waterfall on the Río Arazas in Ordesa y Monte Perdido National Park, Pyrenees, Spain (© David Santiago Garcia/Cavan Images)(Bing United States)

Naqsh-e Rostam archaeological site near Persepolis, Iran (© mshirani/Shutterstock)(Bing United States)

Prince Christian Sound in southern Greenland (© Posnov/Getty Images)(Bing United States)

Long-eared owl in the Bohemian-Moravian Highlands of the Czech Republic (© Ondrej Prosicky/Alamy)(Bing United States)

Guggenheim Museum Bilbao, Spain (© Jeremy Horner/Getty Images)(Bing United States)

Thuringian Forest in autumn with Wartburg Castle, Germany (© ezypix/Getty Images)(Bing United States)

Hoffmann's two-toed sloth mother and young, Puerto Viejo de Talamanca, Costa Rica (© Suzi Eszterhas/Minden Pictures)(Bing United States)

Cypress trees in autumn, Georgia (© Chris Moore/Tandem Stills + Motion)(Bing United States)

Karst mountains in Guilin and Lijiang River National Park, China (© Sean Pavone/Alamy)(Bing United States)

Mute swan in Valkenhorst Nature Reserve, near Valkenswaard, the Netherlands (© David Pattyn/Minden Pictures)(Bing United States)

Oil lamps arranged on a rangoli to celebrate Diwali in Guwahati, India (© Biju Boro/Getty Images)(Bing United States)

Orcus sculpture in the Gardens of Bomarzo in Bomarzo, Italy (© Scott Wilson/Alamy)(Bing United States)

Brocken spectre in Central Balkan National Park, Bulgaria (© Maya Karkalicheva/Getty Images)(Bing United States)

Bridge of Sighs in Venice, Italy (© Doug Pearson/Alamy)(Bing United States)

Stormy sky over Lake Geneva in Lausanne, Switzerland (© Suradech Singhanat/Shutterstock)(Bing United States)

Sea angel (© Alexander Semenov Images/Shutterstock)(Bing United States)

Polar bear at the edge of Hudson Bay, Manitoba, Canada (© Sean Crane/Minden Pictures)(Bing United States)

Trees in Wychwood Forest near Chipping Norton, Oxfordshire, England (© Frederick Ardley/Getty Images)(Bing United States)