Kodama Shrine is a holy place where spiritual souls meet to pray. You can do the same, or simply observe others as they worship.
You'll have no end of sightseeing choices when spending time in Fujisawa. Kodama Shrine is an ideal place to begin here, but there are many other fine spots to check out. Enoshima Aquarium, Zushi Beach, and Yuigahama Beach are not far from the sacred place and will fill in your day nicely.