The Sumida River is a prominent waterway in Tokyo, Japan, stretching approximately 27 kilometers. It flows from Koto Ward to Tokyo Bay, serving as a vital transportation route and a scenic spot for both locals and tourists. The river is lined with parks and historical sites, making it a popular destination for leisurely strolls and boat rides. Historically, the Sumida River played a significant role in the development of Edo, the former name of Tokyo. It was essential for trade and transportation during the Edo period. Today, the river is famous for its cherry blossoms, especially during the Hanami season, attracting many visitors each spring.