Akino Fuku Art Museum is a small art museum devoted to the work of Akino Fuku, with additional pieces by other artists. The building itself is part of the appeal, using local cedar and other regional materials rather than a standard gallery box.
It is outside central Hamamatsu, so it works best for visitors with a specific interest in Japanese painting or architecture. Allow time for the trip rather than treating it as a quick city-centre stop.