Forever Bicycles: Ai Weiwei builds sculpture out of 3,144 shiny silver bikes

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Nuit Blanche is a one-night arts festival held in Toronto every year since 2006, where "Torontonians left behind the comfort of their beds en masse, and ventured out onto the city's streets for an all-night exploration and celebration of contemporary art."

This year, one of the highlights was Ai Weiwei's Forever Bicycles sculpture in Nathan Phillips Square at Toronto City Hall.

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