Tokyo Tower is no stranger to light-ups, but sometimes, they're for a cause bigger than just pretty lights. April 2 is World Autism Awareness Day, and in its honour, the tower and its surroundings will turn blue for a day. Wear some blue in support, and find out more about autism and how it can manifest itself at the information stands in front of Tokyo Tower. There'll also be live performances, singalongs and many photo opps for you to enjoy. In the evening, the tower will be lit up with special blue lights. Raising awareness has never been easier.