Amazing Traffic Light Tree

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The Traffic Light tree was created by French sculptor Pierre Vivant following a competition run by the Public Art Commissions Agency. The Traffic Light tree was installed in 1998 on the site of a plane tree, that was suffering as a result of pollution. It was initially intended that the lights would be triggered to reflect flurries of activity on the London Stock Exchange, but this proved to be too expensive to put into practice. The Traffic Light was situated on a roundabout near Canary Wharf, at the junctions of Heron Quay Bank, Marsh Wall and Westferry Road in one of London's financial districts. [Wiki]