Sydney Opera House Details 6

Interior of the shell

"Although the roof structures are commonly referred to as "shells" (as in this article), they are precast concrete panels supported by precast concrete ribs, not shells in a strictly structural sense.[12] The shells are covered in a subtle chevron pattern with 1,056,006 glossy white- and matte-cream-coloured Swedish-made tiles from Höganäs AB, a factory that generally produced stoneware tiles for the paper-mill industry. though, from a distance, the shells appear a uniform white."

en.wikipedia.org/wiki/Sydney_Opera_House

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