Poenari Castle in the Făgăraș Mountains of Romania (© Susanna Patras/Tandem Stills + Motion)(Bing United States)

Cambridge Gulf and estuary in Western Australia photographed by Landsat 8 satellite (© World History Archive/Alamy)(Bing United States)

The Shanghai World Financial Center in China (© Danny Hu/Getty Images)(Bing United States)

Workers restoring the rotunda of the US Capitol in Washington, DC (© AOC Photo/Alamy)(Bing United States)

Looking up from under the water of a cenote in Dos Ojos, Mexico (© Christian Vizl/Tandem Stills + Motion)(Bing United States)

The Sneffels Range seen from the Dallas Divide in Colorado (© Rachid Dahnoun/Tandem Stills + Motion)(Bing United States)

Crail Harbour, Scotland (© Pietro Bevilacqua/500px)(Bing United States)

George Peabody Library, Baltimore, Maryland (© Matthew Petroff/500px)(Bing United States)

A white stork and chicks nesting in Southwest Alentejo and Vicentine Coast Natural Park, Portugal (© Marco Bustos/Solent News/REX/Shutterstock)(Bing United States)

Marine iguanas, Galápagos Islands, Ecuador (© Tui De Roy/Minden Pictures)(Bing United States)

FDNY Memorial Wall for the New York City firefighters who died on 9/11 (© Dmitry Smolyanitsky/500px)(Bing United States)

Castle Point Lighthouse near the village of Castlepoint, North Island of New Zealand (© Matteo Colombo/Digital Vision/Getty Images)(Bing United States)

Dogon village in the Bandiagara region of Mali (© Quick Shot/Shutterstock)(Bing United States)

View from the City Palace, Udaipur, Rajasthan, India (© Matthias Graben/Getty Images)(Bing United States)

The Thames Estuary and London Array wind farm, England (© NASA)(Bing United States)

Konik horses running, Oostvaardersplassen Nature Reserve, Netherlands (© Jim Brandenburg/Minden Pictures)(Bing United States)

Independence Hall in Philadelphia, Pennsylvania (© Sean Pavone/Alamy)(Bing United States)

A forest stream in Gwaii Haanas National Park Reserve and Haida Heritage Site, Haida Gwaii, British Columbia, Canada (© Robert Postma/plainpicture)(Bing United States)

A sparrowhawk in Kirkcudbright, Scotland (© Ray Cooper/Solent News/REX/Shutterstock)(Bing United States)

Vineyards at Rotenberg in Baden-Württemberg, Germany (© Werner Dieterich/plainpicture)(Bing United States)

Procida Island in the Gulf of Naples, Italy (© Frank Chmura/age fotostock)(Bing United States)

Bear Rocks Preserve, West Virginia (© Anthony Heflin/500px)(Bing United States)

Nesting rabbit (© Dave Semmens/500px)(Bing United States)

Ferris wheel, Erfurt Cathedral, and St. Severus Church during Oktoberfest in Erfurt, Germany (© Hans P. Szyszka/age fotostock)(Bing United States)

Precipice Lake in Sequoia National Park, California (© Caleb Weston/Getty Images)(Bing United States)

Aerial view of the Turpan Depression, China (© NASA)(Bing United States)

Lake Pukaki on South Island, New Zealand (© Martin Heck/Nimia)(Bing United States)

Autumn color on the Mount Ibuki Driveway in Maibara, Shiga, Japan (© The Asahi Shimbun/Getty Images)(Bing United States)

Little auks fly past an iceberg at Spitsbergen, Norway (© Danny Green/Minden Pictures)(Bing United States)

Fan-throated lizard in the Ghoradeshwar Hills, Pune, Maharashtra, India (© Abhishek Bawkar/500px)(Bing United States)