Sumiyoshi-jinja is one of Shimonoseki's more substantial shrines, set away from the busiest waterfront sights in the old Chofu area. Its main hall is valued for its age and style, giving the shrine more architectural weight than a quick neighborhood stop.
Visit it as part of a Chofu walk that also takes in Kozanji Temple and the former castle-town lanes. The grounds are calm rather than showy, so the appeal is in the historic setting and the details of the shrine buildings.