Hatsuebisu Shrine is a sacred site where religious souls meet to pray. You can do the same, or simply observe others as they worship.
You'll have sightseeing choices galore when spending time in Gion. Hatsuebisu Shrine is an ideal place to kick off here, but there are many other worthy places to discover. Kiyomizu Temple, Nijō Castle, and Kyoto Imperial Palace are near the sacred place and and will cap off your day nicely.