Fireworks light up summer sky in Tokyo's Adachi Ward August 2, 2016 (Mainichi Japan) The 38th Adachi Fireworks Festival was held alongside the Arakawa River in Tokyo's Adachi Ward on July 23. According to the Adachi Ward Government, some 13,500 rockets lit up the evening sky over the space of an hour, captivating around 630,000 spectators. Font Size SML Print Share