A Spanish glue company's bonds played an essential role in the binding of stone and steel for the Sagrada Familia temple's 826 panels. The world's tallest church, which was blessed by Pope Leo XVI last week, had been a century in the making. Its architect Antoni Gaudi knew exactly what the six central towers should look like, but what he did not know was that technology would play a pivotal role in the realisation of his dreams.
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