Koshigaya Fireworks Festival, a Saitama Summer Tradition, Draws About 250,000 Visitors
The Koshigaya Fireworks Festival, a summer tradition in Koshigaya City, Saitama Prefecture, was held on Saturday, July 25, 2026, drawing an estimated 250,000 visitors who watched fireworks launch from the embankment between Kasai Yosui (葛西用水) and the Moto-Arakawa River.