Sannomiya Station
From Shin-Kobe Station or Sannomiya Station, take the Seishin-Yamate Line subway to Minatogawa-Kōen Station, change to the Shintetsu Arima Line for Suzurandai Station, at Suzurandai take the Shintetsu Ao Line to Miki Uenomaru Station - from there it's a five minute walk to the Miki Castle ruins.