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The Sultan Ahmed Mosque, also known as The Blue Mosque for the blue tiles adorning the interior walls, at sunset in Istanbul, Turkey, 2006 (Credit: Constantin Barbu via Flickr and en.wikipedia.org)

The Sultan Ahmed Mosque, also known as The Blue Mosque for the blue tiles adorning the interior walls, at sunset in Istanbul, Turkey, 2006 (Credit: Constantin Barbu via Flickr and en.wikipedia.org)