He is an artist best known for wrapping the Reichstag in Berlin and for siting thousands of coloured umbrellas across valleys in Japan and America. Now the Bulgarian-born American artist, Christo Javacheff, is creating for Abu Dhabi a colossal structure that he claims will be the world’s biggest permanent sculpture. Estimated construction costs of $US340 million ($328m) would also make it the world’s most expensive.

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