Nishino Shrine is a holy site where religious souls gather to pray. You can do the same, or respectfully observe others as they worship.
This sacred place in Nishi comes recommended by fellow travelers, so leave a spot for it on your travel plans. However, don't end your sightseeing there. There are loads more options ready for you to experience after Nishino Shrine. Sapporo JR Tower, Sapporo Beer Museum, and Odori Park are close by.