Niiyama Shrine is a holy place where religious souls gather to pray. Enjoy a few moments of reflection, or simply observe others as they worship.
You'll have no end of sightseeing choices when staying in Kanzaki. Niiyama Shrine is a great place to start here, but there are many other interesting sights to appreciate. Saga Horse Racetrack, Yoshinogari Historical Park, and Jofuku Long Life Center are close to the sacred place and will round out your day nicely.