Tower Bridge at night, London -- Jason Hawkes/Getty Images © (Bing United Kingdom)

The pearl monument in the Corniche neighbourhood of Doha, Qatar, illuminated at night with the new high-rises of West Bay in the background -- Jon Hicks/Corbis © (Bing United Kingdom)

Historical regatta in Venice, Italy -- SIME/eStock Photo © (Bing United Kingdom)

Roof of the Stephansdom (St Stephen’s) Cathedral, Vienna, Austria -- Walter Bibikow/Corbis © (Bing United Kingdom)

Cleaning behaviour of blue-striped grunt and four-eyed butterfly fish, Florida Keys National Marine Sanctuary, USA -- Stephen Frink/Corbis © (Bing United Kingdom)

Aerial view of Lake Mead and land erosion near the border of Arizona and Nevada, USA -- Lee Foster/Lonely Planet Images © (Bing United Kingdom)

Second Severn Crossing as seen at dusk from Redwick -- Craig Joiner/Corbis © (Bing United Kingdom)

Dead trees in Dead Vlei, Namib-Naukluft Park, Namibia (© Frank Krahmer/Corbis) © (Bing United Kingdom)

Last Night of the Proms, Royal Albert Hall, London (© Leon Neal/Getty Images) © (Bing United Kingdom)

Rufous-tailed Hummingbird (Amazilia tzacatl) sitting in nest, Manuel Antonio National Park, Puntarenas, Costa Rica (© Shannon Nace/Lonely Planet Images) © (Bing United Kingdom)

Paintings of Paleolithic bulls and other animals crowd calcite walls of the Lascaux caves in southwestern France (© Sisse Brimberg/Getty Images) © (Bing United Kingdom)

Rock Islands, a chain of small islets in the island nation of Palau in Micronesia (© Bob Krist/Corbis) © (Bing United Kingdom)

The Singapore Flyer, a 42-storey high observation wheel in Singapore (© David McLain/Aurora Photos) © (Bing United Kingdom)

A herd of guanacos (Lama guanicoe) in southern Patagonia, Torres del Paine National Park, Chile (© Steve Ogle/Corbis) © (Bing United Kingdom)

Cup fungi (Cookeina tricholoma) in Kinabalu National Park on the island of Borneo (© Frans Lanting/Corbis) © (Bing United Kingdom)

Oktoberfest tent, Spatenbräu, Munich, Germany (© Bodo Schieren/Photolibrary) © (Bing United Kingdom)

Groyne lighthouse, South Shields (© John Short/Age Fotostock) © (Bing United Kingdom)

Two hyacinth macaws in a tree, the Pantanal wetland, Brazil (© Roy Toft/Getty Images) © (Bing United Kingdom)

Aerial view of Ambergris Caye, Belize (© Michael Melford/Getty Images) © (Bing United Kingdom)

Imagine mosaic, part of the Strawberry Fields memorial in Central Park, New York City, USA (© Ocean/Corbis) © (Bing United Kingdom)

Midnight sun on the North Cape, Norway (© SIME/estock) © (Bing United Kingdom)

Kenmore in autumn, Perthshire, Scotland (© Guy Edwardes/Getty Images) © (Bing United Kingdom)

Cheddar Gorge Caves, Cheddar, Somerset, England (© Martin Engelmann/Photolibrary) © (Bing United Kingdom)

Vehicle traveling through a tea plantation in Kerala, southern India (© Hugh Sitton/Corbis) © (Bing United Kingdom)

Mythical creatures guarding the golden chedi at the Grand Palace, Bangkok, Thailand (© David Davis/Photolibrary) © (Bing United Kingdom)

Black-backed jackal pups (© Jami Tarris/Corbis) © (Bing United Kingdom)

Covered bridge near Bradley, Maine, USA (© A. J. Whitney/Getty Images) © (Bing United Kingdom)

Honey jars (© Leser, Nicolas/Corbis) © (Bing United Kingdom)

View from Haleakalā, Maui, Hawaii, USA (© SuperStock/Getty Images) © (Bing United Kingdom)

Red Squirrel (Sciurus vulgaris) feeding on nut, Formby, Merseyside (© Elliott Neep/Photolibrary) © (Bing United Kingdom)