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Pedestrians cross London's Albert Bridge at sunset

According to this Wikipedia article, the bridge is painted in a scheme of pink, blue and green, intended to increase visibility in fog and murky light and hence reduce the risks of shipping colliding with the fragile structure during the day. At night, a network of 4,000 low-voltage tungsten-halogen bulbs illuminate the bridge.

Andrew Winning / Reuters

People cross the Albert Bridge towards Battersea from Chelsea at sunset in London April 2, 2012.