How a royal scandal created one of the world’s greatest sacred masterpieces

How a royal scandal created one of the world’s greatest sacred masterpieces
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By Maureen O'Hare, CNN Istanbul (CNN) — Istanbul skies change with the seasons, the cloudless days and twinkling Bosphorus of summer edged out by the maritime fogs and flinty seas of the darker months. However, there’s one place in the city where the heavens always glow a rich cerulean: inside th...