watermill by sai river (sai-gawa) near daio wasabi farm in azumino.

agriculture ancient asia azumi basin azumidaira azuminoshi beautiful irrigation japan alps mill nagano naganoken old organic river saigawa segi stream trees water wooden attraction clean daio daiou farm gourmet green ingredient japanese landmark natural nature rural sightseeing spice tourism touristic travel traveler vacation wasabi wood watermill sai sai-gawa azumino prefecture azumino