Detail of the Velodrome at the London 2012 Olympic Park in Stratford, London, England (© Anthony Collins Cycling/Alamy) © (Bing Australia)

Boats leaving their stations at the start of a race at Eton Dorney, the venue for rowing and canoe sprint events during the 2012 Summer Games in London, England (© Rob Taylor/age fotostock) © (Bing Australia)

A golden snub-nosed monkey plays in a tree in Qinling Mountains, Shaanxi Province, China (© Ma Xiaobo Photography China/Corbis) © (Bing Australia)

Exterior view of the shooting complex at the Royal Artillery Barracks in London, England (© Ben Stansall/AFP/Getty Images) © (Bing Australia)

Dressage horse and rider (© imagebroker.net/SuperStock) © (Bing Australia)

The Olympic Stadium in Stratford, London, England (© Michael Steele/Getty Images) © (Bing Australia)

Aerial of the Serpentine lake and Hyde Park in London, England (© Andrew Holt/Getty Images) © (Bing Australia)

Three dabbling ducks with their heads in the water, Saxony, Germany (© S Meyers/Blickwinkel/age fotostock) © (Bing Australia)

A detail of the Basketball Arena at the Olympic Park in Stratford, London, England (© Bryn Lennon/Getty Images) © (Bing Australia)

Colourful seating of the Copper Box at Olympic Park in Stratford, London, England (© Edmund Sumner/Corbis) © (Bing Australia)

Sunrise on Bondi Beach in Sydney, Australia with a handrail in foreground (© Pawel Papis / Getty Images) © (Bing Australia)

Sunset at East Point, Darwin, Northern Territory, Australia (© Horst Mahr / Getty Images) © (Bing Australia)

Fritillary butterfly sitting on a blade of green grass (© Clipcanvas) © (Bing Australia)

Close-up of a melon (© Corbis) © (Bing Australia)

Sandboarders hiking up dunes for another ride, Great Sand Dunes National Park, Colorado, USA (© Glenn Oakley/Aurora Photos) © (Bing Australia)

Aerial view of cultivated fields in Arizona, USA (© Jim Wark/Lonely Planet) © (Bing Australia)

Iron staircase of Currituck Beach Lighthouse, North Carolina, USA (© Peter Ptschelinzew/Lonely Planet) © (Bing Australia)

Wat Chai Wattanaram in Ayutthaya, Thailand (© SIME/eStock Photo) © (Bing Australia)

Ice fields at the summit of Mt. Kilimanjaro, Tanzania (© Oleg Bulanyy) © (Bing Australia)

Sheep on Achill Island, County Mayo, Ireland (© Maura Molloy) © (Bing Australia)

Arrow crab on a sponge in the Caribbean Sea (© Jurgen Freund/Aurora Photos) © (Bing Australia)

Plitvice Lakes National Park, Croatia (© Clipcanvas) © (Bing Australia)

Aerial view of Piriápolis waterfront and promenade, Uruguay (© Bernardo Galmarini/Alamy) © (Bing Australia)

Rows of ice pops (© Flirt/Superstock) © (Bing Australia)

Murray River National Park in Australia (© Ignacio Palacios/Lonely Planet) © (Bing Australia)

Combine harvester gathers the wheat crop, England (© Corbis Motion) © (Bing Australia)

Sailboats racing in the 2008 Acura Miami Grand Prix, Florida, USA (© Sharon Green/Corbis) © (Bing Australia)

Svartifoss waterfall flanked by black hexagonal basalt columns in Skaftafell National Park, Iceland (© Martin Moos/Lonely Planet Images) © (Bing Australia)