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In page Grande Arche:

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The Danish architect, von Spreckelsen, chose Italian Carrara marble for the tile cladding of the façade, for the marble's gleaming, milky white exterior. This caused structural problems, as marble is porous, rainwater got into its pores, and when the temperature froze, the ice in its pores cracked the marble, and tiles began buckling and falling down, luckily without, however, hitting, injuring or killing anyone. The monument had to be closed for a few years while French engineers (von Spreckelsen had retired from the project before it was completed and was dead by the time of the collapsing tiles) had the marble tiles removed and replaced with granite quarried in Vermont, which has proved durable, at a cost of some €200M.[citation needed]