Oyster mushrooms in Belgium (© Philippe Clement/Minden Pictures)(Bing United States)
Smith Rock State Park, Oregon (© Manuela Durson/Getty Images)(Bing United States)
Lujiazui Financial District, Shanghai, China (© Jackal Pan/Getty Images)(Bing United States)
A bull in the foothills of Mount Pico on Pico Island in the Portuguese archipelago of the Azores (© Atmo-Sphere/Getty Images)(Bing United States)
Beaver dam in the Sawtooth National Forest, Idaho (© Charles Knowles/Alamy)(Bing United States)
Reedy Island in Moneyboque Bay, Long Island, New York (© Claudia Uripos/eStock Photo)(Bing United States)
A worker painting the Hammering Man, a sculpture by Jonathan Borofsky, in Frankfurt, Germany (© Arne Dedert/Alamy)(Bing United States)
Valletta, Malta (© Deejpilot/Getty Images)(Bing United States)
A bearded reedling in Elmley National Nature Reserve in Kent, England (© Mark Bridger/Offset by Shutterstock)(Bing United States)
Huay Mae Khamin waterfall in Khuean Srinagarindra National Park, Thailand (© ImpaKPro/Getty Images)(Bing United States)
One World Trade Center and lower Manhattan, seen from the Empty Sky memorial in Jersey City, New Jersey (© Maurizio Rellini/Offset by Shutterstock)(Bing United States)
Rocamadour, France (© Rrrainbow/Getty Images)(Bing United States)
Sand dunes with Sangre de Cristo Mountains in the background, Great Sand Dunes National Park and Preserve, Colorado (© Tim Fitzharris/Minden Pictures)(Bing United States)
Ruby-throated hummingbird feeding on yellow bells in the Texas Hill Country (© Rolf Nussbaumer/Danita Delimont)(Bing United States)
'Out of Many, One,' an artwork by Jorge Rodríguez-Gerada on the National Mall in Washington, DC (© Keith Lane/Tribune News Service via Getty Images)(Bing United States)
Guanajuato, Mexico (© AI NISHINO/Alamy)(Bing United States)
The US Constitution and the Declaration of Independence on display in the National Archives, Washington, DC (© Carol M. Highsmith/Buyenlarge/Getty Images)(Bing United States)
Icelandic sheep ready for réttir (© Pieter Tytgat/Getty Images)(Bing United States)
Sailboats in Warnemünde, Germany (© Rico Ködder/Getty Images)(Bing United States)
Sea otter mother and newborn pup in Monterey Bay, California (© Suzi Eszterhas/Minden Pictures)(Bing United States)
The Ship of Tolerance, an international art installation in Zug, Switzerland (© Linda Kennard/Alamy)(Bing United States)
Hobbiton, near Matamata, North Island, New Zealand (© 500px Asia/Getty Images)(Bing United States)
Golden ginkgo leaves at Xuanwu Lake Park in Nanjing, Jiangsu province, China (© SIPA Asia/ZUMA Wire/Alamy)(Bing United States)
Cows decorated for the Almabtrieb in Tannheimer Tal, a valley in Tyrol, Austria (© Hans Lippert/Alamy)(Bing United States)
Ceiling and cove of the Great Hall at the Library of Congress in Washington, DC (© Susan Candelario/Alamy)(Bing United States)
Watkins Glen State Park's Rainbow Falls in the Finger Lakes region of upstate New York (© Kenneth Keifer/Alamy)(Bing United States)
The Fraser River, east of Vancouver, British Columbia, Canada, with the Golden Ears mountains (© LeonU/Getty Images)(Bing United States)
Blue shark near the Azores in the North Atlantic Ocean (© Nuno Sa/Minden Pictures)(Bing United States)
Steeply terraced vineyards of the Lavaux region on the shores of Lake Geneva, Switzerland (© Yves Marcoux/plainpicture)(Bing United States)
A saturniid moth in Mole National Park in Larabanga, Ghana (© Robert Thompson/Minden Pictures)(Bing United States)