Global Landmarks Bathed in Blue for Autism AwarenessBuildings and landmarks across the world were bathed in blue light as part of the annual autism awareness campaign. The Great Sphinx of Giza is illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Cairgo, Egypt. David Degner / Getty ImagesPrintApril 3, 2015, 3:03 AM UTC / Updated April 3, 2015, 3:09 AM UTC / Source: NBC News