POI's creator (Voyajo Team)
The stretches 24.6 km from Inokashira Park in Mitaka to the Sumida River under the Ryōgoku Bridge at the boundary of Taitō, Chūō, and Sumida. Its entire length lies within Tokyo, Japan. It drains an area of 105.0 km². The government of Japan classifies it as a Class I river. (...) (from Wikipedia)