The SS30 Building Observation Lounge is a simple, useful viewpoint near central Sendai. The public lounge on the upper floors gives a broad look over the city, with the mountains clearer on a good day. It is free, quick, and especially handy if you want an overview before heading out to Sendai's hillier sights.
SS30 Building Observation Lounge
Free upper-floor city views from the SS30 office tower