Whether you're on a religious pilgrimage or just curious about what's inside, everybody is welcome to visit Epiphany Cathedral. Why not see if you can stay for a service?
This principal church in Moscow City Centre comes recommended by many travelers, so leave a spot for it on your schedule. Don't stop there, though. There are plenty more options waiting for you to discover after Epiphany Cathedral. Red Square, St. Basil's Cathedral, and Bolshoi Theatre are nearby.