GALLERY: Iconic landmarks light it up blue for autism awareness

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CAIRO, EGYPT - APRIL 02: The Great Sphinx of Giza and The Great Pyramids of Giza are illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Cairgo, Egypt. (Photo by David Degner/Getty Images for Autism Speaks)

(David Degner)

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TAIPEI, TAIWAN - APRIL 02: The Taipei 101 building is illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Taipei City, Taiwan. (Photo by Ashley Pon/Getty Images for Autism Speaks) (Ashley Pon)

Monaco- Prince's Palace

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Capture_1522697701909.JPG (Gross, Lila H)

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