Kaichuinari Shrine is a holy site where religious souls come together to pray. Take a few reflective moments yourself, or respectfully observe others as they worship.
This sacred place in Shinjuku is well-liked by fellow travelers, so make sure it features on your must-see list. However, your day doesn't end there. There are many more spots waiting for you to experience after Kaichuinari Shrine. Tokyo Tower, Tokyo Imperial Palace, and Sensō-ji Temple are close by.