The Hirose River (広瀬川, Hirose-gawa) flows east of Sendai City and sort of separates the inner bustling city from the calmer outskirts. So for example, the Aoba Castle site is on the "calm side" of the river.
taken on 25 August 2017, 12:39
location: Zankyozawa Hydropower in Sendai, Miyagi, Japan