In 1668 Louis XIV began expanding an original hunting lodge in Versailles. The expansion proved to be so great that some 30,000 people were employed on its conversion that resulted
substantially, in the structure we see today.
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is from the user Eric Pouhier and is freely available at http://commons.wikimedia.org/wiki/Image:Versailles_Palace.jpg under the creative commons cc-by-sa 2.5 license.