Built in 2008 to showcase the Buddha's teaching, the pagoda is the world's largest unsupported dome structure, pieced together using an ancient technique of interlocking blocks.

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Mr Gerbeau, who replaced chief executive Jennie Page 10 days ago, has acted quickly to streamline the management structure at the Dome in a bid to make the operation slicker and more cohesive.

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The Dome, the largest single-roofed structure in the world, was built to hold a year-long exhibition to celebrate the beginning of the third millennium.

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Hayes said the original design for the structure included a radome -- short for radar dome -- but that was rejected because of anticipated servicing and maintenance difficulties.

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For example, you may be blown away by the structure of something, like a soccer ball or a geodesic dome, with its hexagonal shapes.

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As workers started to lay a wooden brace at the base of the dome, Brunelleschi suddenly became bedridden, leaving Ghiberti in charge of building a structure he had not designed.

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